CVE record · CVE-2025-52951

Junos OS: IPv6 firewall filter fails to match payload-protocol

CVSS 6.9 MediumEPSS 0.0038 · 31st percentile

Published by the CVE Program (CNA: juniper) at 11 Jul 2025, 14:41 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	Product	Versions
Juniper Networks	Junos OS	affected before 21.2R3-S9 semver affected 21.4 to before 21.4R3-S11 semver affected 22.2 to before 22.2R3-S7 semver affected 22.4 to before 22.4R3-S7 semver affected 23.2 to before 23.2R2-S4 semver affected 23.4 to before 23.4R2-S5 semver affected 24.2 to before 24.2R2-S1 semver affected 24.4 to before 24.4R1-S2, 24.4R2 semver Other versions: unaffected

Identifiers: CVE-2025-52951
CNA: juniper
Weakness (CWE): CWE-693
Tags: Juniper Networks Junos OS
CWE-693
Published: 11 Jul 2025
Updated: 15 Jul 2025

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

Score	Rating	CVSS	Vector	Source
5.8	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N	CNA (juniper)
6.9	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/AU:Y/R:U/RE:M	CNA (juniper)Used for this record

CISA KEV Not listed.
EPSS 0.0038, the 31st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 11 Jul 2025. New records show when each source confirmed them.

Sources

References from the CNA

supportportal.juniper.net/JSA100055 vendor-advisory

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.