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CWE-757 · Input Validation and Logic

Selection of Less-Secure Algorithm During Negotiation

34CVEs

34 CVEs with CWE-757 as their weakness

CVEs with CWE-757, Most likely exploited
CVE · most likely exploitedCVSSEPSSPublished
CVE-2020-10135Bluetooth devices supporting BR/EDR v5.2 and earlier are vulnerable to impersonation attacksBluetooth · BR/EDR · CVSS 5.4 · 2020-05-195.42.4%2020-05-19
CVE-2017-9269lack of keypinning in libzypp could lead to repository switchingSUSE · libzypp · CVSS 7.7 · 2018-03-017.72.2%2018-03-01
CVE-2021-36326Dell EMC Streaming Data Platform, versions prior to 1.3 contain an SSL Strip Vulnerability in the User Interface (UI). A remote unauthenticated attacker could potentially exploit…Dell · Dell EMC Streaming Data Platform · CVSS 6.5 · 2021-11-306.51.2%2021-11-30
CVE-2025-24154An out-of-bounds write was addressed with improved input validation. This issue is fixed in iOS 18.3 and iPadOS 18.3, macOS Sequoia 15.3, macOS Sonoma 14.7.3, macOS Ventura 13.7.3…Apple · iOS and iPadOS · CVSS 9.1 · 2025-01-279.11.2%2025-01-27
CVE-2019-14887A flaw was found when an OpenSSL security provider is used with Wildfly, the 'enabled-protocols' value in the Wildfly configuration isn't honored. An attacker could target the tra…Red Hat · wildfly · CVSS 7.4 · 2020-03-167.41.1%2020-03-16
CVE-2017-9267eDirectory LDAP peer certificate validation issueNovell · eDirectory · CVSS 6.5 · 2018-03-026.51.0%2018-03-02
CVE-2024-4995Protocol Downgrade in Wapro ERP DesktopAsseco Business Solutions S.A. · Wapro ERP Desktop · CVSS 9.8 · 2024-12-189.80.9%2024-12-18
CVE-2023-2974Quarkus-core: tls protocol configured with quarkus.http.ssl.protocols is not enforced, client can enforce weaker supported tls protocolRed Hat · Red Hat build of Quarkus 2.13.8.Final · CVSS 6.5 · 2023-07-046.50.9%2023-07-04
CVE-2019-16791downgrade of effective Strict Transport Security (STS) policy in postfix-mta-sts-resolverSnawoot · postfix-mta-sts-resolver · CVSS 6.9 · 2020-01-226.90.9%2020-01-22
CVE-2026-72887Net::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_tokenNo vendor recorded · CVSS 9.8 · 2026-08-169.80.7%2026-08-16
CVE-2020-16200Philips Clinical Collaboration Platform Algorithm DowngradePhilips · Clinical Collaboration Platform · CVSS 6.5 · 2020-09-186.50.6%2020-09-18
CVE-2018-25029The Z-Wave specification requires that S2 security can be downgraded to S0 or other less secure protocols, allowing an attacker within radio range during pairing to downgrade and…Silicon Labs · Z-Wave · 2022-02-04–0.6%2022-02-04
CVE-2024-20069In modem, there is a possible selection of less-secure algorithm during the VoWiFi IKE due to a missing DH downgrade check. This could lead to remote information disclosure with n…MediaTek, Inc. · MT6833, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6883, MT6885, MT6889… · CVSS 6.5 · 2024-06-036.50.6%2024-06-03
CVE-2026-2673OpenSSL TLS 1.3 server may choose unexpected key agreement groupOpenSSL · OpenSSL · CVSS 6.5 · 2026-03-136.50.5%2026-03-13
CVE-2024-8773Protocol Downgrade in SIMPLE.ERPSimple SA · SIMPLE.ERP · CVSS 8.3 · 2025-03-248.30.4%2025-03-24
CVE-2026-4942IBM i is Affected by Algorithm Downgrade in Transport Layer Security []IBM · i · CVSS 5.9 · 2026-07-175.90.4%2026-07-17
CVE-2026-6092Encrypt-then-MAC could fall back to MAC-then-Encrypt when HAVE_ENCRYPT_THEN_MAC is configuredwolfSSL · wolfSSL · CVSS 2.1 · 2026-06-252.10.4%2026-06-25
CVE-2026-89177Howyar|WeenyGenius - Use of Insecure ProtocolHowyar · WeenyGenius · CVSS 8.8 · 2026-09-118.80.4%2026-09-11
CVE-2026-18691Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential ExposureMongoDB · MongoDB Server · CVSS 8.8 · 2026-08-118.80.4%2026-08-11
CVE-2024-38883An issue in Horizon Business Services Inc. Caterease 16.0.1.1663 through 24.0.1.2405 and possibly later versions, allows a remote attacker to perform a Drop Encryption Level attac…Horizoncloud · Caterease · CVSS 9.1 · 2024-08-029.10.4%2024-08-02
CVE-2026-109952FreeRDP 3.0.0 before 3.32.0 Security Protocol Downgrade via Negotiation ResponseFreeRDP · FreeRDP · CVSS 5.3 · 2026-10-135.30.3%2026-10-13
CVE-2025-10693Silicon Labs Z-Wave PIR Sensor Joins Network as Non-Securesilabs.com · Silicon Labs Z-Wave SDK · CVSS 7.6 · 2025-10-317.60.3%2025-10-31
CVE-2022-33160IBM Security Directory Suite information disclosureIBM · Security Directory Suite · CVSS 3.7 · 2023-10-063.70.3%2023-10-06
CVE-2023-7005CVE-2023-7005Sciener · TTLock App · CVSS 7.5 · 2024-12-197.50.3%2024-12-19
CVE-2025-36582Dell NetWorker, versions 19.12.0.1 and prior, contains a Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade') vulnerability. An unauthenticated attacker w…Dell · NetWorker · CVSS 4.8 · 2025-07-014.80.3%2025-07-01
CVE-2026-1677net: TLS 1.2 connections allowed on TLS 1.3 socketszephyrproject-rtos · Zephyr · CVSS 5.3 · 2026-05-115.30.2%2026-05-11
CVE-2026-59293SMB minimum protocol dialect defaults to SMB1Spring · Spring Integration · CVSS 6.6 · 2026-08-276.60.2%2026-08-27
CVE-2025-59270psPAS does not enforce TLS 1.2 within Get-PASSAMLResponsepspete · psPAS · CVSS 3.1 · 2025-09-163.10.2%2025-09-16
CVE-2026-55953TLS 1.2 and DTLS client accepts unoffered anonymous cipher suite, bypassing server authenticationErlang · OTP · CVSS 9.1 · 2026-07-279.10.2%2026-07-27
CVE-2026-32650Anviz CrossChex Standard Algorithm DowngradeAnviz · Anviz CrossChex Standard · CVSS 7.5 · 2026-04-177.50.2%2026-04-17
CVE-2026-20578In Modem, there is a possible information disclosure due to side channel information disclosure. This could lead to remote denial of service, if a UE has connected to a rogue base…MediaTek, Inc. · MediaTek chipset · CVSS 5.3 · 2026-11-025.30.2%2026-11-02
CVE-2022-23000Weak Default SSL use in Port Forwarding ServiceWestern Digital · My Cloud · CVSS 7.3 · 2022-07-257.30.2%2022-07-25
CVE-2026-123611rustls before 0.23.46 Key Exchange Downgrade via Unauthenticated ServerHellorustls · rustls · CVSS 3.7 · 2026-11-083.70.2%2026-11-08
CVE-2026-6550Key commitment policy bypass via shared key cache in AWS Encryption SDK for PythonAWS · AWS Encryption SDK for Python · CVSS 4.7 · 2026-04-204.70.1%2026-04-20

EPSS is the probability of exploitation in the next 30 days (FIRST). Data as of 2026-11-14.

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