# Gnutls: gnutls: denial of service via heap buffer overflow in dtls handshake fragment reassembly CVE record · `CVE-2026-33846` - **Identifiers:** `CVE-2026-33846` - **State:** Confirmed - **Severity:** CVSS 7.5 High - **Critical:** No - **CNA:** redhat - **Weakness (CWE):** [CWE-130](https://cwe.mitre.org/data/definitions/130.html) - **Tags:** [CWE-130](https://agentprime.io/advisories/tag/cwe-130.md) - **Technologies:** [Red Hat Enterprise Linux 10](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-10.md) · [Red Hat Enterprise Linux 10.0 Extended Update Support](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-10-0-extended-update-support.md) · [Red Hat Enterprise Linux 7 Extended Lifecycle Support](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-7-extended-lifecycle-support.md) · [Red Hat Enterprise Linux 8](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8.md) · [Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8-4-advanced-mission-critical-update-support.md) · [Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8-4-extended-update-support-long-life-add-on.md) · [Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8-6-advanced-mission-critical-update-support.md) · [Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8-6-extended-update-support-long-life-add-on.md) · [Red Hat Enterprise Linux 8.8 Telecommunications Update Service](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8-8-telecommunications-update-service.md) · [Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8-8-update-services-for-sap-solutions.md) · [Red Hat Enterprise Linux 9](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-9.md) · [Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-9-2-update-services-for-sap-solutions.md) · [Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-9-4-update-services-for-sap-solutions.md) · [Red Hat Enterprise Linux 9.6 Extended Update Support](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-9-6-extended-update-support.md) · [Red Hat OpenShift Container Platform 4.12](https://agentprime.io/advisories/technology/red-hat-openshift-container-platform-4-12.md) · [Red Hat OpenShift Container Platform 4.13](https://agentprime.io/advisories/technology/red-hat-openshift-container-platform-4-13.md) · [Red Hat OpenShift Container Platform 4.14](https://agentprime.io/advisories/technology/red-hat-openshift-container-platform-4-14.md) · [Red Hat OpenShift Container Platform 4.15](https://agentprime.io/advisories/technology/red-hat-openshift-container-platform-4-15.md) · [Red Hat OpenShift Container Platform 4.16](https://agentprime.io/advisories/technology/red-hat-openshift-container-platform-4-16.md) · [Red Hat OpenShift Container Platform 4.17](https://agentprime.io/advisories/technology/red-hat-openshift-container-platform-4-17.md) - **Published:** 4 May 2026 - **Updated:** 4 Nov 2026 - **Reviewed by a person:** No Published by the CVE Program (CNA: redhat) at 4 May 2026, 09:08 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. ## Affected products, as the CNA wrote them - Vendor: Red Hat. Product: Red Hat Enterprise Linux 10. - unaffected: `0:3.8.10-4.el10_2 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 10.0 Extended Update Support. - unaffected: `0:3.8.9-9.el10_0.19 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 7 Extended Lifecycle Support. - unaffected: `0:3.3.29-9.el7_9.1 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8. - unaffected: `0:3.6.16-8.el8_10.6 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8. - unaffected: `0:3.6.16-8.el8_10.6 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support. - unaffected: `0:3.6.14-10.el8_4.1 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support. - unaffected: `0:4.13-3.el8_4.1 to before *` (rpm) - Other versions: affected - Package name: `libtasn1` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. - unaffected: `0:3.6.14-10.el8_4.1 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. - unaffected: `0:4.13-3.el8_4.1 to before *` (rpm) - Other versions: affected - Package name: `libtasn1` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support. - unaffected: `0:3.6.16-5.el8_6.5 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support. - unaffected: `0:4.13-3.el8_6.2 to before *` (rpm) - Other versions: affected - Package name: `libtasn1` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. - unaffected: `0:3.6.16-5.el8_6.5 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. - unaffected: `0:4.13-3.el8_6.2 to before *` (rpm) - Other versions: affected - Package name: `libtasn1` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.8 Telecommunications Update Service. - unaffected: `0:3.6.16-7.el8_8.4 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.8 Telecommunications Update Service. - unaffected: `0:4.13-4.el8_8.1 to before *` (rpm) - Other versions: affected - Package name: `libtasn1` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions. - unaffected: `0:3.6.16-7.el8_8.4 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions. - unaffected: `0:4.13-4.el8_8.1 to before *` (rpm) - Other versions: affected - Package name: `libtasn1` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 9. - unaffected: `0:3.8.10-4.el9_8 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 9. - unaffected: `0:3.8.10-4.el9_8 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. - unaffected: `0:3.7.6-21.el9_2.7 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. - unaffected: `0:3.8.3-4.el9_4.6 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 9.6 Extended Update Support. - unaffected: `0:3.8.3-6.el9_6.4 to before *` (rpm) - Other versions: affected - Package name: `gnutls` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat OpenShift Container Platform 4.12. - unaffected: `412.86.202608241157-0 to before *` (rpm) - Other versions: affected - Package name: `openshift/ose-rhel-coreos-8` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat OpenShift Container Platform 4.13. - unaffected: `413.92.202609080414-0 to before *` (rpm) - Other versions: affected - Package name: `openshift/ose-rhel-coreos-9` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat OpenShift Container Platform 4.14. - unaffected: `414.92.202608172040-0 to before *` (rpm) - Other versions: affected - Package name: `openshift/ose-rhel-coreos-9` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat OpenShift Container Platform 4.15. - unaffected: `415.92.202608180329-0 to before *` (rpm) - Other versions: affected - Package name: `openshift/ose-rhel-coreos-9` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat OpenShift Container Platform 4.16. - unaffected: `416.94.202608150307-0 to before *` (rpm) - Other versions: affected - Package name: `openshift/ose-rhel-coreos-9` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat OpenShift Container Platform 4.17. - unaffected: `417.94.202608250221-0 to before *` (rpm) - Other versions: affected - Package name: `openshift/ose-rhel-coreos-9` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat OpenShift Container Platform 4.18. - unaffected: `418.94.202608142238-0 to before *` (rpm) - Other versions: affected - Package name: `openshift/ose-rhel-coreos-9` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat OpenShift Container Platform 4.19. - unaffected: `4.19.9.6.202608182320-0 to before *` (rpm) - Other versions: affected - Package name: `openshift/ose-rhel-coreos-9` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.17. - unaffected: `1791371080 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-acmesolver-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.17. - unaffected: `1791371069 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.17. - unaffected: `1791788287 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.17. - unaffected: `1791970484 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-bundle` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1791459707 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-acmesolver-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1791459711 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1791459759 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-istio-csr-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1789029076 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1791966259 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-bundle` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.20. - unaffected: `1790598593 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-trust-manager-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` And 16 more products. The full list is on the CVE record: ## Not analysed yet We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter. ## Severity and exploitation - 7.5 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`, from CNA (redhat) (used for this record) - 7.5 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`, from ADP (redhat-SADP) - **CISA KEV:** Not listed. - **EPSS:** 0.013, the 69th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days. ## Timeline - 4 May 2026, 09:08 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-33846) - 4 May 2026, 10:15 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-33846) ## Sources - [CVE List: CVE-2026-33846](https://www.cve.org/CVERecord?id=CVE-2026-33846) - [NVD: CVE-2026-33846](https://nvd.nist.gov/vuln/detail/CVE-2026-33846) ### References from the CNA - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) And 7 more on the CVE record. Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description. ## Check whether this affects you This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run. - With the agentprime MCP server (), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: - As JSON: - Everything that needs attention now: --- The web page: . Everything for agents: .