CWE-347— Improper Verification of Cryptographic Signature

An improper verification of cryptographic signature vulnerability exists in the Palo Alto Networks Prisma Cloud Compute console. This vulnerability enables an attacker to bypass signature validation during SAML authentication by logging in…

FusionAuth fusionauth-samlv2 0.2.3 allows remote attackers to forge messages and bypass authentication via a SAML assertion that lacks a Signature element, aka a "Signature exclusion attack".

Whale Browser Installer before 1.2.0.5 versions don't support signature verification for Flash installer.

An issue was discovered on Samsung mobile devices with N(7.1), O(8.x), and P(9.0) software. SPENgesture allows arbitrary applications to read or modify user-input logs. The Samsung ID is SVE-2019-14170 (June 2019).

A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Withou…

A flaw was found in OpenSSL. When configured to use an RSA key with exponent 3, OpenSSL improperly removes PKCS-1 padding before generating a hash. This allows remote attackers to forge PKCS #1 v1.5 signatures. Consequently, OpenSSL may in…

Improper verification of cryptographic signature issue exists in "FreeFrom - the nostr client" App versions prior to 1.3.5 for Android and iOS. The affected app cannot detect event data with invalid signatures.

Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.

In the current development version of Eclipse aeriOS, which has not yet had an official release, the KrakenD instance included in the API Gateway component had the disable_jwk_security parameter hard-coded to true, with no option to overri…

Cloud Foundry UAA incorrectly treated XML encryption to the Service Provider (confidentiality) as a substitute for XML signatures from the Identity Provider (authenticity) in two SAML flows: the OAuth 2.0 SAML2 bearer grant (token endpoint…

A condition in the ScreenConnect server component may allow an actor with access to server-level cryptographic material used for authentication to obtain unauthorized access, including elevated privileges, in certain scenarios. ScreenConne…

uthenticode is a small cross-platform library for partially verifying Authenticode digital signatures. Version 1.0.9 of uthenticode hashed the entire file rather than hashing sections by virtual address, in violation of the Authenticode sp…

RouterOS does not compare the complete RSA public key when matching an SSH authentication request to an authorized user key, checking the key type and modulus but omitting the exponent. Because signature verification uses the client-suppli…

Adobe Acrobat and Reader versions 2019.008.20081 and earlier, 2019.008.20080 and earlier, 2019.008.20081 and earlier, 2017.011.30106 and earlier version, 2017.011.30105 and earlier version, 2015.006.30457 and earlier, and 2015.006.30456 an…

Improper verification of cryptographic signature (CWE-347) in the firmware update handler of the management service (uavmonitor_usbv1) of the 1300 communications board in DJI AeroScope Mobile (TP703) firmware 03.00.00.26, with 1300 communi…

A vulnerability to perform a privilege escalation attack on the server as a non-admin user.

Hickory DNS hickory-proto 0.1 through 0.25.0-alpha.3 and hickory-net before 0.26.2 contain a DNSSEC validation bypass because the validator verifies an RRSIG against the DNSKEY of whatever name appears in its Signer's Name field without ch…

MinIO Signature V4 verification before RELEASE.2026-09-22T19-25-18Z accepts unsigned x-amz-* headers, letting a presigned PUT URL be escalated into a cross-bucket read.

Improper signature verification in Loader in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)

Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.

In Anjvision YSSD‑RTMP‑H5 firmware version 3.3.2.4, both the local and cloud update mechanisms apply new firmware without any cryptographic verification, relying only on basic hashing. This design allows an attacker who can reach the u…

An authenticated, low-privileged user with access to the NetBackup Flex OS management shell could bypass the cryptographic signature verification step of a privileged support command by supplying a specially formed access credential. Su…

A potential security vulnerability in HPE IceWall products could be exploited to tamper SAML response, allowing an attacker to impersonate another user.

CommServe contained a cryptographic signature verification issue affecting privilege management. Software customers upgrade to resolved maintenance release. Update CommServe and Web Server.

Zohocorp ManageEngine Password Manager Pro versions before 13232 and PAM360 versions before 8551 are vulnerable to an authentication bypass vulnerability due to improper SAML validation.

Incorrect authorization validation in refresh token signature allows non-admin users to obtain a signed JFrog administrator token.

Ghidra before 12.1 contains an authentication bypass vulnerability in PKIAuthenticationModule.authenticate() that allows any user with a valid CA-signed certificate to impersonate other users by presenting their public certificate with a n…

The Web-based Management allows a remote low privileged Engineer user to install additional APPs on the device downloaded from the PLCnext Store without implementing any data verification mechanism, leading to the capability for an Enginee…

Philips Hue Bridge hk_hap Ed25519 Signature Verification Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Philips Hue Bridge. Authentication is…

authentik is an open-source identity provider. Prior to 2025.8.6, 2025.10.4, and 2025.12.4, when using a SAML Source that has the option Verify Assertion Signature under Verification Certificate enabled and not Verify Response Signature, o…

SAP NetWeaver Application Server ABAP and ABAP Platform allows an authenticated attacker with normal privileges to obtain a valid signed message and send modified signed XML documents to the verifier. This may result in acceptance of tampe…

An insufficiently secured internal function allows session generation for arbitrary users. The decodeParam function checks the JWT but does not verify which signing algorithm was used. As a result, an attacker can use the "ex:action" param…

Samsung SmartThings Improper Verification of Cryptographic Signature Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Samsung SmartThings. Authe…

An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed signature spoofing for unauthorized internal users. Instances not utilizing SAML single sign-on or where the attacke…

Dell RecoverPoint for Virtual Machines 6.0.x contains an OS Command injection vulnerability. A low privileged remote attacker could potentially exploit this vulnerability by running any command as root, leading to gaining of root-level acc…

Improper verification of cryptographic signature during installation of a Printer driver via the TeamViewer_service.exe component of TeamViewer Remote Clients prior version 15.58.4 for Windows allows an attacker with local unprivileged acc…

Improper verification of cryptographic signature during installation of a VPN driver via the TeamViewer_service.exe component of TeamViewer Remote Clients prior version 15.58.4 for Windows allows an attacker with local unprivileged access …

IBM WebSphere Application Server 8.5 and 9.0 is vulnerable to identity spoofing by an authenticated user due to improper signature validation. IBM X-Force ID: 294721.

yii2-authclient is an extension that adds OpenID, OAuth, OAuth2 and OpenId Connect consumers for the Yii framework 2.0. In yii2-authclient prior to version 2.2.15, the Oauth2 PKCE implementation is vulnerable in 2 ways. First, the `authCod…

Bashis, a Security Researcher at IPVM has found a flaw that allows for a remote code execution during the installation of Wave on the camera device. The Wave server application in camera device was vulnerable to command injection allowing …

Improper privilege management in Zoom Desktop Client for Windows and Zoom Rooms for Windows before 5.15.5 may allow an authenticated user to enable an information disclosure via local access.

Zoom Rooms for Conference Rooms for Windows versions before 5.11.0 are susceptible to a Local Privilege Escalation vulnerability. A local low-privileged malicious user could exploit this vulnerability to escalate their privileges to the SY…

The Zoom Client for Meetings for MacOS (Standard and for IT Admin) before version 5.11.3 contains a vulnerability in the package signature validation during the update process. A local low-privileged user could exploit this vulnerability t…

The Zoom Client for Meetings for macOS (Standard and for IT Admin) starting with version 5.7.3 and before 5.11.5 contains a vulnerability in the auto update process. A local low-privileged user could exploit this vulnerability to escalate …

Yubico ykneo-openpgp before 1.0.10 has a typo in which an invalid PIN can be used. When first powered up, a signature will be issued even though the PIN has not been validated.

An issue was discovered in SaltStack Salt in versions before 3002.8, 3003.4, 3004.1. Salt Masters do not sign pillar data with the minion’s public key, which can result in attackers substituting arbitrary pillar data.

There is an privilege escalation vulnerability in organization-specific logins in Esri Portal for ArcGIS versions 10.9 and below that may allow a remote, authenticated attacker who is able to intercept and modify a SAML assertion to impers…

An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0 through 12.0.2, and 12.1.0. When using federated identity management (authenticating via SAML through a third-party identity provider), an attacker…

The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation in Texas Instruments SimpleLink SIMPLELINK-CC2640R2-SDK through 2.2.3 allows the Diffie-Hellman check during the Secure Connection pairing to be skipped if the Link Laye…

Crypt::Perl::ECDSA in the Crypt::Perl (aka p5-Crypt-Perl) module before 0.32 for Perl fails to verify correct ECDSA signatures when r and s are small and when s = 1. This happens when using the curve secp256r1 (prime256v1). This could conc…