CWE-347
AllowedImproper Verification of Cryptographic Signature
Abstraction: Base · Status: Draft
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
1412 vulnerabilities reference this CWE, most recent first.
CVE-2026-81700 (GCVE-0-2026-81700)
Vulnerability from cvelistv5 – Published: 2026-08-27 14:51 – Updated: 2026-10-01 15:21- CWE-347 - Improper Verification of Cryptographic Signature
| URL | Tags |
|---|---|
| https://github.com/jahlives/openssl_encrypt/secur… | vendor-advisory |
| https://www.vulncheck.com/advisories/openssl-encr… | third-party-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| jahlives | openssl_encrypt |
Affected:
0 , < 1.4.9
(semver)
Unaffected: 1.4.9 (semver) cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:*:*:* |
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CVE-2026-81680 (GCVE-0-2026-81680)
Vulnerability from cvelistv5 – Published: 2026-08-27 14:50 – Updated: 2026-10-01 15:21- CWE-347 - Improper Verification of Cryptographic Signature
| URL | Tags |
|---|---|
| https://github.com/jahlives/openssl_encrypt/secur… | vendor-advisory |
| https://www.vulncheck.com/advisories/openssl-encr… | third-party-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| jahlives | openssl_encrypt |
Affected:
0 , < 1.4.9
(semver)
Unaffected: 1.4.9 (semver) cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:*:*:* |
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CVE-2026-80469 (GCVE-0-2026-80469)
Vulnerability from cvelistv5 – Published: 2026-09-11 08:27 – Updated: 2026-09-11 14:06- CWE-347 - Improper verification of cryptographic signature
| URL | Tags |
|---|---|
| https://www.sick.com/psirt | x_SICK PSIRT Security Advisories |
| https://www.sick.com/media/docs/9/19/719/special_… | x_SICK Operating Guidelines |
| https://www.cisa.gov/resources-tools/resources/ic… | x_ICS-CERT recommended practices on Industrial Security |
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| https://www.sick.com/.well-known/csaf/white/2026/… | vendor-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| SICK AG | Sentio Creator Extension 'Device Manager' |
Affected:
0 , ≤ 1.4
(custom)
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CVE-2026-80465 (GCVE-0-2026-80465)
Vulnerability from cvelistv5 – Published: 2026-09-03 11:25 – Updated: 2026-09-03 18:15- CWE-347 - Improper Verification of Cryptographic Signature
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | Mendix SAML (Mendix 10 compatible) |
Affected:
0 , < V4.2.3
(custom)
|
|
| Siemens | Mendix SAML (Mendix 11 compatible) |
Affected:
0 , < V4.2.3
(custom)
|
|
| Siemens | Mendix SAML (Mendix 9.24 compatible) |
Affected:
0 , < V3.6.27
(custom)
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CVE-2026-80098 (GCVE-0-2026-80098)
Vulnerability from cvelistv5 – Published: 2026-09-03 22:59 – Updated: 2026-10-01 23:01 Exclusively Hosted Service- CWE-347 - Improper Verification of Cryptographic Signature
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft Copilot Studio |
Affected:
-
cpe:2.3:a:microsoft:copilot_studio:*:*:*:*:*:*:*:* |
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CVE-2026-79970 (GCVE-0-2026-79970)
Vulnerability from cvelistv5 – Published: 2026-09-09 11:43 – Updated: 2026-09-16 15:51- CWE-347 - Improper Verification of Cryptographic Signature
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| https://www.dell.com/support/kbdoc/en-in/00050342… | vendor-advisory |
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|---|---|---|---|
| Dell | Secure Connect Gateway 5.0 - Application |
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0 , < 5.36.00.00 or later
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|
|
| Dell | Secure Connect Gateway 5.0 - Appliance |
Affected:
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CVE-2026-78223 (GCVE-0-2026-78223)
Vulnerability from cvelistv5 – Published: 2026-09-17 13:09 – Updated: 2026-09-17 18:28- CWE-347 - Improper Verification of Cryptographic Signature
| Vendor | Product | Version | |
|---|---|---|---|
| team-alembic | ash_authentication |
Affected:
0.2.0 , < 4.15.0
(semver)
Affected: 5.0.0-rc.0 , < 5.0.0-rc.14 (semver) cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:* |
|
| team-alembic | ash_authentication |
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(git)
cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:* |
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CVE-2026-77805 (GCVE-0-2026-77805)
Vulnerability from cvelistv5 – Published: 2026-10-05 12:40 – Updated: 2026-10-05 15:26- CWE-347 - Improper Verification of Cryptographic Signature
| URL | Tags |
|---|---|
| https://docs.telerik.com/fiddler/knowledge-base/k… | vendor-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| Progress Software | Progress® Telerik® Fiddler® Classic |
Affected:
1.0.0 , < 6.0.20262.10021
(custom)
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CVE-2026-76581 (GCVE-0-2026-76581)
Vulnerability from cvelistv5 – Published: 2026-08-28 06:39 – Updated: 2026-08-28 15:24- CWE-347 - Improper Verification of Cryptographic Signature
| Vendor | Product | Version | |
|---|---|---|---|
| wpmudev | WPMU DEV Dashboard |
Affected:
0 , ≤ 5.0.1
(semver)
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CVE-2026-76234 (GCVE-0-2026-76234)
Vulnerability from cvelistv5 – Published: 2026-08-19 14:02 – Updated: 2026-08-21 11:21- CWE-347 - Improper Verification of Cryptographic Signature
| URL | Tags |
|---|---|
| https://github.com/celabshq/libcrux/security/advi… | vendor-advisory |
| https://www.vulncheck.com/advisories/libcrux-befo… | third-party-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| celabshq | libcrux-ecdh |
Affected:
0 , < 0.0.6
(semver)
Unaffected: 0.0.6 (semver) |
|
| celabshq | libcrux-ed25519 |
Affected:
0 , < 0.0.6
(semver)
Unaffected: 0.0.6 (semver) |
|
| celabshq | libcrux-psq |
Affected:
0 , < 0.0.7
(semver)
Unaffected: 0.0.7 (semver) |
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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.