Common Weakness Enumeration
CWE-347
AllowedImproper Verification of Cryptographic Signature
Abstraction: Base · Status: Draft
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
1122 vulnerabilities reference this CWE, most recent first.
CVE-2025-12295 (GCVE-0-2025-12295)
Vulnerability from cvelistv5 – Published: 2025-10-27 16:32 – Updated: 2025-10-27 17:44 Unsupported When Assigned
VLAI
EPSS
VEX
Title
D-Link DAP-2695 Firmware Update sub_40C6B8 signature verification
Summary
A weakness has been identified in D-Link DAP-2695 2.00RC13. The affected element is the function sub_40C6B8 of the component Firmware Update Handler. Executing manipulation can lead to improper verification of cryptographic signature. The attack can be launched remotely. Attacks of this nature are highly complex. The exploitability is described as difficult. The exploit has been made available to the public and could be exploited. This vulnerability only affects products that are no longer supported by the maintainer.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.329963 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.329963 | signaturepermissions-required |
| https://vuldb.com/?submit.675854 | third-party-advisory |
| https://github.com/IOTRes/IOT_Firmware_Update/blo… | exploitpatch |
| https://www.dlink.com/ | product |
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CVE-2025-12150 (GCVE-0-2025-12150)
Vulnerability from cvelistv5 – Published: 2026-02-27 08:10 – Updated: 2026-03-06 18:46
VLAI
EPSS
VEX
Title
Org.keycloak/keycloak-services: webauthn attestation statement verification bypass
Summary
A flaw was found in Keycloak’s WebAuthn registration component. This vulnerability allows an attacker to bypass the configured attestation policy and register untrusted or forged authenticators via submission of an attestation object with fmt: "none", even when the realm is configured to require direct attestation. This can lead to weakened authentication integrity and unauthorized authenticator registration.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2025:21370 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2025:21371 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2025:22088 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2025:22089 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2025-12150 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2406192 | issue-trackingx_refsource_REDHAT |
| https://github.com/keycloak/keycloak/issues/43723 |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Keycloak | keycloak |
Affected:
0 , < 26.4.4
(semver)
|
|
| Red Hat | Red Hat build of Keycloak 26.2 |
Unaffected:
26.2.11-1 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.2::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.2 |
Unaffected:
26.2-12 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.2::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.2.11 |
cpe:/a:redhat:build_keycloak:26.2::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.4 |
Unaffected:
26.4.4-1 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.4::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.4 |
Unaffected:
26.4-3 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.4::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.4.4 |
cpe:/a:redhat:build_keycloak:26.4::el9 |
Date Public
2025-10-28 15:04
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CVE-2025-12007 (GCVE-0-2025-12007)
Vulnerability from cvelistv5 – Published: 2026-01-16 08:39 – Updated: 2026-02-26 21:39
VLAI
EPSS
VEX
Title
Supermicro BMC firmware update validation bypass
Summary
There is a vulnerability in the Supermicro BMC firmware validation logic at Supermicro MBD-X13SEM-F . An attacker can update the system firmware with a specially crafted image.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
Impacted products
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CVE-2025-12006 (GCVE-0-2025-12006)
Vulnerability from cvelistv5 – Published: 2026-01-16 08:36 – Updated: 2026-02-26 15:04
VLAI
EPSS
VEX
Title
Supermicro BMC firmware update validation bypass
Summary
There is a vulnerability in the Supermicro BMC firmware validation logic at Supermicro MBD-X12STW-F . An attacker can update the system firmware with a specially crafted image.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
Impacted products
Credits
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CVE-2025-9485 (GCVE-0-2025-9485)
Vulnerability from cvelistv5 – Published: 2025-10-04 02:24 – Updated: 2026-04-08 17:25
VLAI
EPSS
VEX
Title
OAuth Single Sign On – SSO (OAuth Client) <= 6.26.12 - Authentication Bypass via get_resource_owner_from_id_token()
Summary
The OAuth Single Sign On – SSO (OAuth Client) plugin for WordPress is vulnerable to Improper Verification of Cryptographic Signature in versions up to, and including, 6.26.12. This is due to the plugin performing unsafe JWT token processing without verification or validation in the `get_resource_owner_from_id_token` function. This makes it possible for unauthenticated attackers to bypass authentication and gain access to any existing user account - including administrators in certain configurations - or to create arbitrary subscriber-level accounts.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| cyberlord92 | OAuth Single Sign On – SSO (OAuth Client) |
Affected:
0 , ≤ 6.26.12
(semver)
|
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CVE-2025-7937 (GCVE-0-2025-7937)
Vulnerability from cvelistv5 – Published: 2025-09-19 02:09 – Updated: 2026-02-26 17:48
VLAI
EPSS
VEX
Title
Supermicro BMC firmware update validation bypass
Summary
There is a vulnerability in the Supermicro BMC firmware validation logic at Supermicro MBD-X12STW . An attacker can update the system firmware with a specially crafted image.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SMCI | MBD-X12STW |
Affected:
01.06.17
|
Date Public
2025-09-16 16:00
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CVE-2025-6198 (GCVE-0-2025-6198)
Vulnerability from cvelistv5 – Published: 2025-09-19 01:45 – Updated: 2026-02-26 17:48
VLAI
EPSS
VEX
Title
Supermicro BMC firmware update validation bypass
Summary
There is a vulnerability in the Supermicro BMC firmware validation logic at Supermicro MBD-X13SEM-F . An attacker can update the system firmware with a specially crafted image.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
Date Public
2025-09-16 16:00
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CVE-2025-4371 (GCVE-0-2025-4371)
Vulnerability from cvelistv5 – Published: 2025-08-18 20:04 – Updated: 2025-08-19 13:01
VLAI
EPSS
VEX
Summary
A potential vulnerability was reported in the Lenovo 510 FHD and Performance FHD web cameras that could allow an attacker with physical access to write arbitrary firmware updates to the device over a USB connection.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Lenovo | 510 FHD Webcam |
Affected:
0 , < 4.8.0
(custom)
|
|
| Lenovo | Performance FHD Webcam |
Affected:
0 , < 4.8.0
(custom)
|
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CVE-2025-2866 (GCVE-0-2025-2866)
Vulnerability from cvelistv5 – Published: 2025-04-27 19:04 – Updated: 2025-11-03 19:46
VLAI
EPSS
VEX
Title
PDF signature forgery with adbe.pkcs7.sha1 SubFilter
Summary
Improper Verification of Cryptographic Signature vulnerability in LibreOffice allows PDF Signature Spoofing by Improper Validation.
In the affected versions of LibreOffice a flaw in the verification code for adbe.pkcs7.sha1 signatures could cause invalid signatures to be accepted as valid
This issue affects LibreOffice: from 24.8 before < 24.8.6, from 25.2 before < 25.2.2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Document Foundation | LibreOffice |
Affected:
24.8 , < < 24.8.6
(24.8 series)
Affected: 25.2 , < < 25.2.2 (25.2 series) |
Date Public
2025-04-27 19:00
Credits
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CVE-2025-2764 (GCVE-0-2025-2764)
Vulnerability from cvelistv5 – Published: 2025-04-23 16:48 – Updated: 2025-04-23 18:08
VLAI
EPSS
VEX
Title
CarlinKit CPC200-CCPA update.cgi Improper Verification of Cryptographic Signature Code Execution Vulnerability
Summary
CarlinKit CPC200-CCPA update.cgi Improper Verification of Cryptographic Signature Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of CarlinKit CPC200-CCPA devices. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.
The specific flaw exists within the handling of update packages provided to update.cgi. The issue results from the lack of proper verification of a cryptographic signature. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-24355.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_research-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| CarlinKit | CPC200-CCPA |
Affected:
2024.01.19.1541
|
Date Public
2025-03-25 23:21
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No mitigation information available for this CWE.
CAPEC-463: Padding Oracle Crypto Attack
An adversary is able to efficiently decrypt data without knowing the decryption key if a target system leaks data on whether or not a padding error happened while decrypting the ciphertext. A target system that leaks this type of information becomes the padding oracle and an adversary is able to make use of that oracle to efficiently decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). In addition to performing decryption, an adversary is also able to produce valid ciphertexts (i.e., perform encryption) by using the padding oracle, all without knowing the encryption key.
CAPEC-475: Signature Spoofing by Improper Validation
An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.