Advisories · Weakness
CWE-757.
Every Advisory and CVE whose sources give the weakness CWE-757, newest first.
- CVSS 5.3 Medium
In Modem, there is a possible information disclosure due to side channel information disclosure.
- MediaTek, Inc. MediaTek chipset
- CWE-757
- CVSS 3.7 Low
rustls: An unauthenticated ServerHello poisons the per-name key-exchange record, so later ClientHellos carry only a classical X25519 share
- CWE-757
<0.23.46 || >=0.24.0-dev.1, <0.24.0-dev.2 · fixed in 0.23.46, 0.24.0-dev.2
GHSA-w44r-93j7-qv28 - CVSS 6.0 Medium
RSA PKCS#1 v1.5 padding oracle via legacy envelope key format downgrade in Amazon S3 Encryption Client for .NET
- Amazon.Extensions.S3.Encryption
- CWE-204
- CWE-757
- CVSS 6.0 Medium
FreeRDP 3.0.0 before 3.32.0 Security Protocol Downgrade via Negotiation Response
- FreeRDP
- CWE-757
- CVSS 8.7 High
AsyncHttpClient: Digest challenge without a usable nonce downgrades to Basic and sends the password in cleartext
- Weak cryptography or TLS
- Hard-coded credentials
>=3.0.0.Beta1, <3.0.13 || >=2.0.0, <2.16.1 · fixed in 3.0.13, 2.16.1
GHSA-rqf5-2wxv-rjf4 · CVE-2026-107231 - CVSS 8.8 High
AsyncHttpClient: Digest mutual authentication is switched off by a peer offering qop=auth-int
- AsyncHttpClient async-http-client
- Authentication bypass
- CWE-757
- CVSS 9.2 CriticalCritical · CVSS 9+
Apache PLC4X: OPC UA secure channel: integrity bypass, unverifiable server certificate, and silent downgrade
- Apache Software Foundation Apache PLC4X
- Weak cryptography or TLS
- CWE-757
- CVSS 8.7 High
Howyar|WeenyGenius - Use of Insecure Protocol
- Howyar WeenyGenius
- CWE-757
- CVSS 6.6 Medium
SMB minimum protocol dialect defaults to SMB1
- Spring Integration
- CWE-757
- CVSS 9.8 CriticalCritical · CVSS 9+
Net::OAuth versions before 0.33 for Perl allow the sender to choose the signature algorithm in verify
- Weak cryptography or TLS
- CWE-757
- CVSS 9.8 CriticalCritical · CVSS 9+
Net::OAuth::Client versions before 0.32 for Perl allow the service provider to silently downgrade OAuth 1.0a to OAuth 1.0 in get_request_token
- CWE-757
- CVSS 9.0 CriticalCritical · CVSS 9+
Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential Exposure
- MongoDB Server
- CWE-757
- CVSS 9.1 CriticalCritical · CVSS 9+
TLS 1.2 and DTLS client accepts unoffered anonymous cipher suite, bypassing server authentication
- Erlang OTP
- CWE-757
- CVSS 8.2 High
PostgreSQL JDBC Driver: Silent channel-binding authentication downgrade via unsupported certificate algorithms
- CWE-636
- CWE-757
>=42.7.4, <42.7.12 · fixed in 42.7.12
GHSA-j92g-9f8w-j867 · CVE-2026-54291 - CVSS 5.9 Medium
IBM i is Affected by Algorithm Downgrade in Transport Layer Security []
- i
- CWE-757
- CVSS 9.4 CriticalCritical · CVSS 9+
Better Auth has insecure cryptographic defaults in oidcProvider: alg=none advertised and plain PKCE accepted by default
- Weak cryptography or TLS
- CWE-757
<1.6.11 · fixed in 1.6.11
GHSA-9h47-pqcx-hjr4 · CVE-2026-67336 - CVSS 8.2 High
OnGres SCRAM silent channel-binding authentication downgrade via unsupported certificate algorithms
- CWE-636
- CWE-757
<3.3 · fixed in 3.3
GHSA-p9jg-fcr6-3mhf · CVE-2026-53712 - CVSS 2.1 Low
Encrypt-then-MAC could fall back to MAC-then-Encrypt when HAVE_ENCRYPT_THEN_MAC is configured
- wolfSSL
- CWE-757
- CVSS 3.7 Low
CoreWCF: WS-Security Reference DigestMethod Algorithm-Suite Bypass
- Weak cryptography or TLS
- CWE-757
<1.8.1 || >=1.9.0, <1.9.1 · fixed in 1.8.1, 1.9.1
GHSA-4v55-cpmv-3vcm · CVE-2026-54780 - CVSS 6.3 Medium
Symfony: Mailomat Mailer Webhook Parser Reads the HMAC Algorithm from the Request: Signature Algorithm Downgrade
- Weak cryptography or TLS
- CWE-757
>=7.2.0, <7.4.13 || >=8.0.0, <8.0.13 · fixed in 7.4.13, 8.0.13
GHSA-rrj9-5q2j-4gvr · CVE-2026-48747 - CVSS 5.3 Medium
net: TLS 1.2 connections allowed on TLS 1.3 sockets
- Zephyr
- CWE-757
- CVSS 5.7 Medium
AWS Encryption SDK for Python: Key commitment policy bypass via shared key cache
- CWE-757
>=2.0.0, <3.3.1 || >=4.0.0, <4.0.5 · fixed in 3.3.1, 4.0.5
GHSA-v638-38fc-rhfv · CVE-2026-6550 - CVSS 7.5 High
Anviz CrossChex Standard Algorithm Downgrade
- Anviz CrossChex Standard
- CWE-757
- CVSS 6.5 Medium
OpenSSL TLS 1.3 server may choose unexpected key agreement group
- OpenSSL
- CWE-757
- CVSS 7.6 High
Silicon Labs Z-Wave PIR Sensor Joins Network as Non-Secure
- silabs.com Silicon Labs Z-Wave SDK
- CWE-757
- CVSS 2.3 Low
psPAS does not enforce TLS 1.2 within Get-PASSAMLResponse
- pspete psPAS
- CWE-757
- CVSS 4.8 Medium
Dell NetWorker: Dell NetWorker, versions 19.12.0.1 and prior…
- Dell NetWorker
- CWE-757
- CVSS 8.3 High
Protocol Downgrade in SIMPLE.ERP
- Simple SA SIMPLE.ERP
- CWE-757
- CVSS 9.1 CriticalCritical · CVSS 9+
An out-of-bounds write was addressed with improved input validation.
- Apple iOS and iPadOS
- Apple macOS
- CWE-757
- CVSS 9.1 CriticalCritical · CVSS 9+
Protocol Downgrade in Wapro ERP Desktop
- Asseco Business Solutions S.A. Wapro ERP Desktop
- Information disclosure
- CWE-757
- CVSS 9.1 CriticalCritical · CVSS 9+
An issue in Horizon Business Services Inc.
- CWE-757
- CVSS 6.5 Medium
In modem, there is a possible selection of less-secure algorithm during the VoWiFi IKE due to a missing DH downgrade check.
- MediaTek, Inc. MT6833, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT8675, MT8771, MT8791T, MT8797
- CWE-757
- CVSS 7.5 High
Dex discarding TLSconfig and always serves deprecated TLS 1.0/1.1 and insecure ciphers
- Weak cryptography or TLS
- CWE-757
<0.0.0-20240125115555-5bbdb4420254 || >=2.37.0, <2.38.0 · fixed in 0.0.0-20240125115555-5bbdb4420254, 2.38.0
GHSA-gr79-9v6v-gc9r · CVE-2024-23656 - CVSS 3.7 Low
IBM Security Directory Suite information disclosure
- IBM Security Directory Suite
- CWE-757
- CVSS 6.5 Medium
quarkus-core vulnerable to client driven TLS cipher downgrading
- CWE-757
<2.16.8.Final · fixed in 2.16.8.Final
GHSA-3fhx-3vvg-2j84 · CVE-2023-2974 - CVSS 7.3 High
Weak Default SSL use in Port Forwarding Service
- Western Digital My Cloud
- CWE-757
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Silicon Labs Z-Wave: The Z-Wave specification requires that S2 security can be downgraded to S0 or other less…
- Silicon Labs Z-Wave
- CWE-757
- CVSS 6.5 Medium
Dell EMC Streaming Data Platform: Dell EMC Streaming Data Platform, versions prior to 1.3 contain an SSL Strip…
- Dell EMC Streaming Data Platform
- CWE-757
- CVSS 6.5 Medium
Philips Clinical Collaboration Platform Algorithm Downgrade
- Philips Clinical Collaboration Platform
- CWE-757
- CVSS 5.4 Medium
Bluetooth devices supporting BR/EDR v5.2 and earlier are vulnerable to impersonation attacks
- Bluetooth BR/EDR
- CWE-757
- CVSS 7.4 High
Red Hat wildfly: A flaw was found when an OpenSSL security provider is used with Wildfly…
- Red Hat wildfly
- CWE-757
- CVSS 6.9 Medium
postfix-mta-sts-resolver Algorithm Downgrade vulnerability
- CWE-757
<0.5.1 · fixed in 0.5.1
GHSA-h92m-42h4-82f6 · CVE-2019-16791 - CVSS 6.5 Medium
eDirectory LDAP peer certificate validation issue
- Novell eDirectory
- CWE-757
- CVSS 7.7 High
lack of keypinning in libzypp could lead to repository switching
- SUSE libzypp
- CWE-757