CWE-347

Improper Verification of Cryptographic Signature

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

CVE-2025-20181 (GCVE-0-2025-20181)

Vulnerability from cvelistv5 – Published: 2025-05-07 17:35 – Updated: 2025-05-07 19:45
VLAI
Summary
A vulnerability in Cisco IOS Software for Cisco Catalyst 2960X, 2960XR, 2960CX, and 3560CX Series Switches could allow an authenticated, local attacker with privilege level 15 or an unauthenticated attacker with physical access to the device to execute persistent code at boot time and break the chain of trust. This vulnerability is due to missing signature verification for specific files that may be loaded during the device boot process. An attacker could exploit this vulnerability by placing a crafted file into a specific location on an affected device. A successful exploit could allow the attacker to execute arbitrary code at boot time. Because this allows the attacker to bypass a major security feature of the device, Cisco has raised the Security Impact Rating (SIR) of this advisory from Medium to High.
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Impacted products
Vendor Product Version
Cisco IOS Affected: 15.0(1)XO1
Affected: 15.0(1)XO
Affected: 15.0(2)XO
Affected: 15.0(1)EY
Affected: 15.0(1)EY1
Affected: 15.0(1)EY2
Affected: 15.0(2)SE8
Affected: 15.0(1)EX
Affected: 15.0(2)EX
Affected: 15.0(2)EX1
Affected: 15.0(2)EX2
Affected: 15.0(2)EX3
Affected: 15.0(2)EX4
Affected: 15.0(2)EX5
Affected: 15.0(2)EX8
Affected: 15.0(2a)EX5
Affected: 15.0(2)EX10
Affected: 15.0(2)EX11
Affected: 15.0(2)EX13
Affected: 15.0(2)EX12
Affected: 15.2(2)E
Affected: 15.2(3)E
Affected: 15.2(2)E1
Affected: 15.2(4)E
Affected: 15.2(3)E1
Affected: 15.2(2)E2
Affected: 15.2(2a)E1
Affected: 15.2(2)E3
Affected: 15.2(2a)E2
Affected: 15.2(3)E2
Affected: 15.2(3a)E
Affected: 15.2(3)E3
Affected: 15.2(4)E1
Affected: 15.2(2)E4
Affected: 15.2(2)E5
Affected: 15.2(4)E2
Affected: 15.2(3)E4
Affected: 15.2(5)E
Affected: 15.2(4)E3
Affected: 15.2(2)E6
Affected: 15.2(5)E1
Affected: 15.2(5b)E
Affected: 15.2(2)E5a
Affected: 15.2(2)E5b
Affected: 15.2(4)E4
Affected: 15.2(2)E7
Affected: 15.2(5)E2
Affected: 15.2(6)E
Affected: 15.2(4)E5
Affected: 15.2(2)E8
Affected: 15.2(6)E0a
Affected: 15.2(6)E1
Affected: 15.2(6)E0c
Affected: 15.2(4)E6
Affected: 15.2(6)E2
Affected: 15.2(2)E9
Affected: 15.2(4)E7
Affected: 15.2(7)E
Affected: 15.2(2)E10
Affected: 15.2(4)E8
Affected: 15.2(6)E2a
Affected: 15.2(6)E2b
Affected: 15.2(7)E1
Affected: 15.2(7)E0a
Affected: 15.2(7)E0b
Affected: 15.2(7)E0s
Affected: 15.2(6)E3
Affected: 15.2(4)E9
Affected: 15.2(7)E2
Affected: 15.2(7a)E0b
Affected: 15.2(4)E10
Affected: 15.2(7)E3
Affected: 15.2(7)E1a
Affected: 15.2(7b)E0b
Affected: 15.2(7)E2a
Affected: 15.2(4)E10a
Affected: 15.2(7)E4
Affected: 15.2(7)E3k
Affected: 15.2(8)E
Affected: 15.2(8)E1
Affected: 15.2(7)E5
Affected: 15.2(7)E6
Affected: 15.2(8)E2
Affected: 15.2(4)E10d
Affected: 15.2(7)E7
Affected: 15.2(8)E3
Affected: 15.2(7)E8
Affected: 15.2(8)E4
Affected: 15.2(7)E9
Affected: 15.2(8)E5
Affected: 15.2(8)E6
Affected: 15.2(7)E10
Affected: 15.2(6)EB
Affected: 15.2(4)EA7
Affected: 15.2(4)EA8
Affected: 15.2(4)EA9
Affected: 15.2(4)EA9a
Affected: 15.0(2)SQD
Affected: 15.0(2)SQD1
Affected: 15.0(2)SQD2
Affected: 15.0(2)SQD3
Affected: 15.0(2)SQD4
Affected: 15.0(2)SQD5
Affected: 15.0(2)SQD6
Affected: 15.0(2)SQD7
Affected: 15.0(2)SQD8
Create a notification for this product.
Show details on NVD website

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CVE-2025-20206 (GCVE-0-2025-20206)

Vulnerability from cvelistv5 – Published: 2025-03-05 16:14 – Updated: 2026-02-26 19:09
VLAI
Title
Cisco Secure Client for Windows with VPN Posture (HostScan) Module DLL Hijacking Vulnerability
Summary
A vulnerability in the interprocess communication (IPC) channel of Cisco Secure Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device if the Secure Firewall Posture Engine, formerly HostScan, is installed on Cisco Secure Client. This vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to a specific Cisco Secure Client process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid user credentials on the Windows system.
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Impacted products
Vendor Product Version
Cisco Cisco Secure Client Affected: 4.9.00086
Affected: 4.9.01095
Affected: 4.9.02028
Affected: 4.9.03047
Affected: 4.9.03049
Affected: 4.9.04043
Affected: 4.9.04053
Affected: 4.9.05042
Affected: 4.9.06037
Affected: 4.10.00093
Affected: 4.10.01075
Affected: 4.10.02086
Affected: 4.10.03104
Affected: 4.10.04065
Affected: 4.10.04071
Affected: 4.10.05085
Affected: 4.10.05095
Affected: 5.0.00238
Affected: 4.10.05111
Affected: 5.0.00529
Affected: 5.0.00556
Affected: 4.10.06079
Affected: 5.0.01242
Affected: 4.10.06090
Affected: 5.0.02075
Affected: 4.10.07061
Affected: 5.0.03072
Affected: 4.10.07062
Affected: 5.0.03076
Affected: 5.0.04032
Affected: 4.10.07073
Affected: 5.0.05040
Affected: 5.1.0.136
Affected: 5.1.1.42
Affected: 4.10.08025
Affected: 5.1.2.42
Affected: 4.10.08029
Affected: 5.1.3.62
Affected: 5.1.4.74
Affected: 5.1.5.65
Affected: 5.1.6.103
Affected: 5.1.7.80
Create a notification for this product.
Show details on NVD website

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CVE-2025-20248 (GCVE-0-2025-20248)

Vulnerability from cvelistv5 – Published: 2025-09-10 16:06 – Updated: 2026-02-26 17:48
VLAI
Title
Cisco IOS XR Software Image Verification Bypass Vulnerability
Summary
A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR Software image signature verification and load unsigned software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device. This vulnerability is due to incomplete validation of files during the installation of an .iso file. An attacker could exploit this vulnerability by modifying contents of the .iso image and then installing and activating it on the device. A successful exploit could allow the attacker to load an unsigned file as part of the image activation process.
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Impacted products
Vendor Product Version
Cisco Cisco IOS XR Software Affected: 6.5.3
Affected: 6.5.29
Affected: 6.5.1
Affected: 6.6.1
Affected: 6.5.2
Affected: 6.5.92
Affected: 6.5.15
Affected: 6.6.2
Affected: 7.0.1
Affected: 6.6.25
Affected: 6.5.26
Affected: 6.6.11
Affected: 6.5.25
Affected: 6.5.28
Affected: 6.5.93
Affected: 6.6.12
Affected: 6.5.90
Affected: 7.0.0
Affected: 7.1.1
Affected: 7.0.90
Affected: 6.6.3
Affected: 6.7.1
Affected: 7.0.2
Affected: 7.1.15
Affected: 7.2.0
Affected: 7.2.1
Affected: 7.1.2
Affected: 6.7.2
Affected: 7.1.25
Affected: 6.6.4
Affected: 7.3.1
Affected: 7.1.3
Affected: 6.7.3
Affected: 7.4.1
Affected: 7.2.2
Affected: 6.5.31
Affected: 6.8.1
Affected: 7.4.15
Affected: 6.5.32
Affected: 7.3.2
Affected: 7.5.1
Affected: 7.4.16
Affected: 7.3.27
Affected: 7.6.1
Affected: 7.5.2
Affected: 7.6.15
Affected: 7.3.3
Affected: 7.7.1
Affected: 6.8.2
Affected: 7.3.4
Affected: 7.4.2
Affected: 6.7.35
Affected: 6.9.1
Affected: 7.6.2
Affected: 7.8.1
Affected: 7.5.3
Affected: 7.7.2
Affected: 6.9.2
Affected: 7.9.1
Affected: 7.8.2
Affected: 7.5.4
Affected: 6.5.33
Affected: 7.8.22
Affected: 7.10.1
Affected: 7.7.21
Affected: 7.9.2
Affected: 7.3.5
Affected: 7.5.5
Affected: 7.11.1
Affected: 7.9.21
Affected: 7.10.2
Affected: 7.6.3
Affected: 24.1.1
Affected: 7.3.6
Affected: 7.11.2
Affected: 24.2.1
Affected: 24.1.2
Affected: 24.2.11
Affected: 24.3.1
Affected: 24.4.1
Affected: 24.2.2
Affected: 7.8.23
Affected: 7.11.21
Affected: 24.2.20
Affected: 24.3.2
Affected: 24.4.10
Affected: 6.5.35
Affected: 24.4.15
Affected: 6.5.351
Affected: 6.5.352
Create a notification for this product.
Show details on NVD website

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CVE-2025-2233 (GCVE-0-2025-2233)

Vulnerability from cvelistv5 – Published: 2025-03-11 22:30 – Updated: 2026-02-26 19:09
VLAI
Title
Samsung SmartThings Improper Verification of Cryptographic Signature Authentication Bypass Vulnerability
Summary
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. Authentication is not required to exploit this vulnerability. The specific flaw exists within the Hub Local API service, which listens on TCP port 8766 by default. The issue results from the lack of proper verification of a cryptographic signature. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-25615.
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
zdi
References
Impacted products
Vendor Product Version
Samsung SmartThings Affected: 000.054.00013
Create a notification for this product.
Date Public
2025-03-11 22:30
Show details on NVD website

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CVE-2025-23206 (GCVE-0-2025-23206)

Vulnerability from cvelistv5 – Published: 2025-01-17 20:34 – Updated: 2026-01-23 15:12
VLAI
Title
IAM OIDC custom resource allows connection to unauthorized OIDC provider in aws-cdk
Summary
The AWS Cloud Development Kit (AWS CDK) is an open-source software development framework to define cloud infrastructure in code and provision it through AWS CloudFormation. Users who use IAM OIDC custom resource provider package will download CA Thumbprints as part of the custom resource workflow. However, the current `tls.connect` method will always set `rejectUnauthorized: false` which is a potential security concern. CDK should follow the best practice and set `rejectUnauthorized: true`. However, this could be a breaking change for existing CDK applications and we should fix this with a feature flag. Note that this is marked as low severity Security advisory because the issuer url is provided by CDK users who define the CDK application. If they insist on connecting to a unauthorized OIDC provider, CDK should not disallow this. Additionally, the code block is run in a Lambda environment which mitigate the MITM attack. The patch is in progress. To mitigate, upgrade to CDK v2.177.0 (Expected release date 2025-02-22). Once upgraded, users should make sure the feature flag '@aws-cdk/aws-iam:oidcRejectUnauthorizedConnections' is set to true in `cdk.context.json` or `cdk.json`. There are no known workarounds for this vulnerability.
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Impacted products
Vendor Product Version
aws aws-cdk Affected: < 2.177.0
Create a notification for this product.
Show details on NVD website

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CVE-2025-23364 (GCVE-0-2025-23364)

Vulnerability from cvelistv5 – Published: 2025-07-08 10:34 – Updated: 2025-07-08 16:11
VLAI
Summary
A vulnerability has been identified in TIA Administrator (All versions < V3.0.6). The affected application improperly validates code signing certificates. This could allow an attacker to bypass the check and exceute arbitrary code during installations.
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Impacted products
Vendor Product Version
Siemens TIA Administrator Affected: 0 , < V3.0.6 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2025-23369 (GCVE-0-2025-23369)

Vulnerability from cvelistv5 – Published: 2025-01-21 18:46 – Updated: 2025-02-12 20:41
VLAI
Title
Improper Verification of Cryptographic Signature in GitHub Enterprise Server Allows Signature Spoofing by Improper Validation
Summary
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 attacker is not already an existing user were not impacted. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.12.14, 3.13.10, 3.14.7, 3.15.2, and 3.16.0. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.12.0 , ≤ 3.12.13 (semver)
Affected: 3.13.0 , ≤ 3.13.9 (semver)
Affected: 3.14.0 , ≤ 3.14.6 (semver)
Affected: 3.15.0 , ≤ 3.15.1 (semver)
Unaffected: 3.16.0 (semver)
Create a notification for this product.
Credits
hakivvi
Show details on NVD website

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CVE-2025-24015 (GCVE-0-2025-24015)

Vulnerability from cvelistv5 – Published: 2025-06-03 22:48 – Updated: 2025-06-04 19:15
VLAI
Title
Deno's AES GCM authentication tags are not verified
Summary
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Versions 1.46.0 through 2.1.6 have an issue that affects AES-256-GCM and AES-128-GCM in Deno in which the authentication tag is not being validated. This means tampered ciphertexts or incorrect keys might not be detected, which breaks the guarantees expected from AES-GCM. Older versions of Deno correctly threw errors in such cases, as does Node.js. Without authentication tag verification, AES-GCM degrades to essentially CTR mode, removing integrity protection. Authenticated data set with set_aad is also affected, as it is incorporated into the GCM hash (ghash) but this too is not validated, rendering AAD checks ineffective. Version 2.1.7 includes a patch that addresses this issue.
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Impacted products
Vendor Product Version
denoland deno Affected: >= 1.46.0, < 2.1.7
Create a notification for this product.
Show details on NVD website

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CVE-2025-24043 (GCVE-0-2025-24043)

Vulnerability from cvelistv5 – Published: 2025-03-11 16:58 – Updated: 2026-02-13 19:38
VLAI
Title
WinDbg Remote Code Execution Vulnerability
Summary
Improper verification of cryptographic signature in .NET allows an authorized attacker to execute code over a network.
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
Microsoft WinDbg Affected: 1.0.0 , < 1.2502.25002.0 (custom)
Create a notification for this product.
Date Public
2025-03-11 07:00
Show details on NVD website

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CVE-2025-24800 (GCVE-0-2025-24800)

Vulnerability from cvelistv5 – Published: 2025-01-28 15:41 – Updated: 2025-01-28 16:07
VLAI
Title
Critical vulnerability in `ismp-grandpa` <v15.0.1
Summary
Hyperbridge is a hyper-scalable coprocessor for verifiable, cross-chain interoperability. A critical vulnerability was discovered in the ismp-grandpa crate, that allowed a malicious prover easily convince the verifier of the finality of arbitrary headers. This could be used to steal funds or compromise other kinds of cross-chain applications. This vulnerability is fixed in 15.0.1.
CWE
  • CWE-670 - Always-Incorrect Control Flow Implementation
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Impacted products
Vendor Product Version
polytope-labs hyperbridge Affected: < 15.0.1
Create a notification for this product.
Show details on NVD website

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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.

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