CWE-757
Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')
Description
A protocol or its implementation supports interaction between multiple actors and allows those actors to negotiate which algorithm should be used as a protection mechanism such as encryption or authentication, but it does not select the strongest algorithm that is available to both parties.
Hierarchy (View 1000)
Parents
Children
none
Related attack patterns (CAPEC)
CAPEC-220 · CAPEC-606 · CAPEC-620
CVEs mapped to this weakness (36)
page 1 of 2| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2024-4995 | Cri | 0.64 | 9.8 | 0.01 | Dec 18, 2024 | Wapro ERP Desktop is vulnerable to MS SQL protocol downgrade request from a server side, what could lead to an unencrypted communication vulnerable to data interception and modification. This issue affects Wapro ERP Desktop versions before 9.00.0. | ||
| CVE-2025-24154 | Cri | 0.59 | 9.1 | 0.01 | Jan 27, 2025 | An 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, visionOS 2.3. An attacker may be able to cause unexpected system termination or corrupt kernel… | ||
| CVE-2024-38883 | Cri | 0.59 | 9.1 | 0.00 | Aug 2, 2024 | An 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 attack due to the selection of a less-secure algorithm during negotiation. | ||
| CVE-2019-14887 | Cri | 0.59 | 9.1 | 0.01 | Mar 16, 2020 | A 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 traffic sent from Wildfly and downgrade the connection to a weaker version of TLS, potentially breaking… | ||
| CVE-2026-89177 | Hig | 0.57 | 8.8 | 0.00 | Sep 11, 2026 | WeenyGenius, a computer lab management system by Howyar Technologies, has a Use of Insecure Protocol vulnerability. Due to the reliance on ZMTP Null mode, unauthenticated attackers on the same network can capture packets to leak transmitted data, or perform replay attacks with… | ||
| CVE-2026-72889 | Cri | 0.57 | 9.8 | 0.00 | Aug 19, 2026 | Net::OAuth versions before 0.33 for Perl allow the sender to choose the signature algorithm in verify. verify resolves the signature method class from the signature_method parameter of the incoming message. signature_method is required on every request, so the algorithm used to… | ||
| CVE-2026-72887 | Cri | 0.57 | 9.8 | 0.01 | Aug 16, 2026 | 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. Passing a callback to the constructor selects OAuth 1.0a. get_request_token then revokes that choice when the request token response… | ||
| CVE-2026-18691 | Hig | 0.57 | 8.8 | 0.00 | Aug 11, 2026 | An issue in MongoDB Server's intra-cluster connection setup could allow a party with suitable network access to influence which authentication mechanism is used when one replica set member connects to another. Under certain conditions, this could cause the cluster's shared… | ||
| CVE-2024-8773 | Hig | 0.54 | — | 0.00 | Mar 24, 2025 | SIMPLE.ERP client is vulnerable to MS SQL protocol downgrade request from a server side, what could lead to an unencrypted communication vulnerable to data interception and modification. This issue affect SIMPLE.ERP from 6.20 to 6.30. Only the 6.30 version received a patch… | ||
| CVE-2018-25029 | Hig | 0.53 | 8.1 | 0.01 | Feb 4, 2022 | The 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 then exploit a different vulnerability (CVE-2013-20003) to intercept and spoof traffic. | ||
| CVE-2017-9269 | Hig | 0.50 | 7.7 | 0.02 | Mar 1, 2018 | In libzypp before August 2018 GPG keys attached to YUM repositories were not correctly pinned, allowing malicious repository mirrors to silently downgrade to unsigned repositories with potential malicious content. | ||
| CVE-2026-32650 | Hig | 0.49 | 7.5 | 0.00 | Apr 17, 2026 | Anviz CrossChex Standard is vulnerable when an attacker manipulates the TDS7 PreLogin to disable encryption, causing database credentials to be sent in plaintext and enabling unauthorized database access. | ||
| CVE-2025-10693 | Hig | 0.49 | — | 0.00 | Oct 31, 2025 | When SmartStart Inclusion fails during the onboarding of a Z-Wave PIR sensor, the sensor will join the network as a non-secure device. This vulnerability exists in Silicon Labs' Z-Wave PIR Sensor Reference design delivered as part of SiSDK v2025.6.0 and v2025.6.1. | ||
| CVE-2022-23000 | Hig | 0.47 | 7.3 | 0.00 | Jul 25, 2022 | The Western Digital My Cloud Web App [https://os5.mycloud.com/] uses a weak SSLContext when attempting to configure port forwarding rules. This was enabled to maintain compatibility with old or outdated home routers. By using an "SSL" context instead of "TLS" or specifying… | ||
| CVE-2019-16791 | Med | 0.45 | 6.9 | 0.01 | Jan 22, 2020 | In postfix-mta-sts-resolver before 0.5.1, All users can receive incorrect response from daemon under rare conditions, rendering downgrade of effective STS policy. | ||
| CVE-2026-59293 | Med | 0.43 | 6.6 | 0.00 | Aug 27, 2026 | Unless the application explicitly raises smbMinVersion, the jCIFS client will negotiate down to SMB1/CIFS, which lacks mandatory signing/encryption and is vulnerable to NTLM relay and content-tampering MITM. Spring Integration 7.1.0 Spring Integration 7.0.0 - 7.0.5 Spring… | ||
| CVE-2024-20069 | Med | 0.42 | 6.5 | 0.01 | Jun 3, 2024 | In 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 no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID:… | ||
| CVE-2024-23656 | Hig | 0.42 | 7.5 | 0.00 | Jan 25, 2024 | Dex is an identity service that uses OpenID Connect to drive authentication for other apps. Dex 2.37.0 serves HTTPS with insecure TLS 1.0 and TLS 1.1. `cmd/dex/serve.go` line 425 seemingly sets TLS 1.2 as minimum version, but the whole `tlsConfig` is ignored after `TLS cert… | ||
| CVE-2021-36326 | Med | 0.42 | 6.5 | 0.01 | Nov 30, 2021 | Dell 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 this vulnerability, leading to a downgrade in the communications between the client and server into… | ||
| CVE-2020-16200 | Med | 0.42 | 6.5 | 0.01 | Sep 18, 2020 | Philips Clinical Collaboration Platform, Versions 12.2.1 and prior, does not properly control the allocation and maintenance of a limited resource, thereby enabling an attacker to influence the amount of resources consumed, eventually leading to the exhaustion of available … |
- risk 0.64cvss 9.8epss 0.01
Wapro ERP Desktop is vulnerable to MS SQL protocol downgrade request from a server side, what could lead to an unencrypted communication vulnerable to data interception and modification. This issue affects Wapro ERP Desktop versions before 9.00.0.
- risk 0.59cvss 9.1epss 0.01
An 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, visionOS 2.3. An attacker may be able to cause unexpected system termination or corrupt kernel…
- risk 0.59cvss 9.1epss 0.00
An 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 attack due to the selection of a less-secure algorithm during negotiation.
- risk 0.59cvss 9.1epss 0.01
A 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 traffic sent from Wildfly and downgrade the connection to a weaker version of TLS, potentially breaking…
- risk 0.57cvss 8.8epss 0.00
WeenyGenius, a computer lab management system by Howyar Technologies, has a Use of Insecure Protocol vulnerability. Due to the reliance on ZMTP Null mode, unauthenticated attackers on the same network can capture packets to leak transmitted data, or perform replay attacks with…
- risk 0.57cvss 9.8epss 0.00
Net::OAuth versions before 0.33 for Perl allow the sender to choose the signature algorithm in verify. verify resolves the signature method class from the signature_method parameter of the incoming message. signature_method is required on every request, so the algorithm used to…
- risk 0.57cvss 9.8epss 0.01
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. Passing a callback to the constructor selects OAuth 1.0a. get_request_token then revokes that choice when the request token response…
- risk 0.57cvss 8.8epss 0.00
An issue in MongoDB Server's intra-cluster connection setup could allow a party with suitable network access to influence which authentication mechanism is used when one replica set member connects to another. Under certain conditions, this could cause the cluster's shared…
- risk 0.54cvss —epss 0.00
SIMPLE.ERP client is vulnerable to MS SQL protocol downgrade request from a server side, what could lead to an unencrypted communication vulnerable to data interception and modification. This issue affect SIMPLE.ERP from 6.20 to 6.30. Only the 6.30 version received a patch…
- risk 0.53cvss 8.1epss 0.01
The 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 then exploit a different vulnerability (CVE-2013-20003) to intercept and spoof traffic.
- risk 0.50cvss 7.7epss 0.02
In libzypp before August 2018 GPG keys attached to YUM repositories were not correctly pinned, allowing malicious repository mirrors to silently downgrade to unsigned repositories with potential malicious content.
- risk 0.49cvss 7.5epss 0.00
Anviz CrossChex Standard is vulnerable when an attacker manipulates the TDS7 PreLogin to disable encryption, causing database credentials to be sent in plaintext and enabling unauthorized database access.
- risk 0.49cvss —epss 0.00
When SmartStart Inclusion fails during the onboarding of a Z-Wave PIR sensor, the sensor will join the network as a non-secure device. This vulnerability exists in Silicon Labs' Z-Wave PIR Sensor Reference design delivered as part of SiSDK v2025.6.0 and v2025.6.1.
- risk 0.47cvss 7.3epss 0.00
The Western Digital My Cloud Web App [https://os5.mycloud.com/] uses a weak SSLContext when attempting to configure port forwarding rules. This was enabled to maintain compatibility with old or outdated home routers. By using an "SSL" context instead of "TLS" or specifying…
- risk 0.45cvss 6.9epss 0.01
In postfix-mta-sts-resolver before 0.5.1, All users can receive incorrect response from daemon under rare conditions, rendering downgrade of effective STS policy.
- risk 0.43cvss 6.6epss 0.00
Unless the application explicitly raises smbMinVersion, the jCIFS client will negotiate down to SMB1/CIFS, which lacks mandatory signing/encryption and is vulnerable to NTLM relay and content-tampering MITM. Spring Integration 7.1.0 Spring Integration 7.0.0 - 7.0.5 Spring…
- risk 0.42cvss 6.5epss 0.01
In 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 no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID:…
- risk 0.42cvss 7.5epss 0.00
Dex is an identity service that uses OpenID Connect to drive authentication for other apps. Dex 2.37.0 serves HTTPS with insecure TLS 1.0 and TLS 1.1. `cmd/dex/serve.go` line 425 seemingly sets TLS 1.2 as minimum version, but the whole `tlsConfig` is ignored after `TLS cert…
- risk 0.42cvss 6.5epss 0.01
Dell 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 this vulnerability, leading to a downgrade in the communications between the client and server into…
- risk 0.42cvss 6.5epss 0.01
Philips Clinical Collaboration Platform, Versions 12.2.1 and prior, does not properly control the allocation and maintenance of a limited resource, thereby enabling an attacker to influence the amount of resources consumed, eventually leading to the exhaustion of available …