CWE-347
AllowedImproper Verification of Cryptographic Signature
Abstraction: Base · Status: Draft
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
1476 vulnerabilities reference this CWE, most recent first.
CVE-2026-86585 (GCVE-0-2026-86585)
Vulnerability from cvelistv5 – Published: 2026-09-16 10:13 – Updated: 2026-09-16 17:47- CWE-347 - Improper Verification of Cryptographic Signature
| URL | Tags |
|---|---|
| https://fermax.com/security-advisories | vendor-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| Fermax Electronica S.A.U. | DUOX PLUS monitor firmware (VEO Wi-Fi range) |
Affected:
0 , < 01.48.001
(custom)
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CVE-2026-86405 (GCVE-0-2026-86405)
Vulnerability from cvelistv5 – Published: 2026-10-09 12:52 – Updated: 2026-10-12 22:54- CWE-347 - Improper verification of cryptographic signature
| URL | Tags |
|---|---|
| https://siberguvenlik.gov.tr/guvenlik-bildirimler… | government-resource |
| Vendor | Product | Version | |
|---|---|---|---|
| Sipay Electronic Money and Payment Services Inc. | PrestaShop Virtual POS Module |
Affected:
26.8.1 , < 26.9.1
(semver)
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CVE-2026-86326 (GCVE-0-2026-86326)
Vulnerability from cvelistv5 – Published: 2026-10-02 10:21 – Updated: 2026-10-02 10:39- CWE-347 - Improper Verification of Cryptographic Signature
| URL | Tags |
|---|---|
| https://www.moxa.com/en/support/product-support/s… | vendor-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| Moxa | MGate MB3170 Series |
Affected:
1.0
cpe:2.3:a:moxa:mgate_mb3170_series:1.0:*:*:*:*:*:*:* |
|
| Moxa | MGate MB3270 Series |
Affected:
1.0
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CVE-2026-86304 (GCVE-0-2026-86304)
Vulnerability from cvelistv5 – Published: 2026-09-06 22:24 – Updated: 2026-09-08 18:41- CWE-347 - Improper Verification of Cryptographic Signature
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CVE-2026-86109 (GCVE-0-2026-86109)
Vulnerability from cvelistv5 – Published: 2026-09-16 02:57 – Updated: 2026-09-17 17:40- CWE-347 - Improper Verification of Cryptographic Signature
| URL | Tags |
|---|---|
| https://www.arista.com/zh/support/advisories-noti… | vendor-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| Arista Networks | VeloCloud Edge |
Affected:
6.4.0 , ≤ 6.4.1.x
(custom)
Affected: 6.1.0 , ≤ 6.1.4.x (custom) Affected: 5.2.0 , ≤ 5.2.6.x (custom) Affected: 0.0.0 , < 5.2.0 (custom) |
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CVE-2026-86080 (GCVE-0-2026-86080)
Vulnerability from cvelistv5 – Published: 2026-09-08 21:25 – Updated: 2026-09-09 13:16- CWE-347 - Improper Verification of Cryptographic Signature
| URL | Tags |
|---|---|
| https://github.com/n8n-io/n8n/security/advisories… | x_refsource_CONFIRM |
| https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76 | x_refsource_MISC |
| https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7 | x_refsource_MISC |
| https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2 | x_refsource_MISC |
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CVE-2026-86038 (GCVE-0-2026-86038)
Vulnerability from cvelistv5 – Published: 2026-09-17 15:16 – Updated: 2026-09-17 17:24| URL | Tags |
|---|---|
| https://github.com/libp2p/js-libp2p/security/advi… | x_refsource_CONFIRM |
| https://github.com/libp2p/js-libp2p/pull/3569 | x_refsource_MISC |
| https://github.com/libp2p/js-libp2p/commit/cec2b1… | x_refsource_MISC |
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CVE-2026-85995 (GCVE-0-2026-85995)
Vulnerability from cvelistv5 – Published: 2026-09-22 17:15 – Updated: 2026-09-22 17:43- CWE-347 - Improper Verification of Cryptographic Signature
| URL | Tags |
|---|---|
| https://github.com/notepad-plus-plus/notepad-plus… | x_refsource_CONFIRM |
| https://github.com/notepad-plus-plus/notepad-plus… | x_refsource_MISC |
| https://github.com/notepad-plus-plus/notepad-plus… | x_refsource_MISC |
| https://notepad-plus-plus.org/news/v898-released | x_refsource_MISC |
| Vendor | Product | Version | |
|---|---|---|---|
| notepad-plus-plus | notepad-plus-plus |
Affected:
< 8.9.8
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CVE-2026-85962 (GCVE-0-2026-85962)
Vulnerability from cvelistv5 – Published: 2026-10-12 16:12 – Updated: 2026-10-15 18:06| URL | Tags |
|---|---|
| https://community.progress.com/s/article/Marklogi… | vendor-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| Progress Software Corporation | MarkLogic Server |
Affected:
11.0.0 , < 11.3.7
(custom)
Affected: 12.0.0 , < 12.1.0 (custom) |
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CVE-2026-85818 (GCVE-0-2026-85818)
Vulnerability from cvelistv5 – Published: 2026-10-13 19:00 – Updated: 2026-10-16 23:18- CWE-347 - Improper Verification of Cryptographic Signature
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9711
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9711
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.3231
(custom)
|
|
| Microsoft | Windows 11 Version 26H2 |
Affected:
10.0.26300.0 , < 10.0.26300.9711
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5761
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
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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.