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Common Weakness Enumeration

CWE-327

Allowed-with-Review

Use of a Broken or Risky Cryptographic Algorithm

Abstraction: Class · Status: Draft

API response cwe.mitre.org

The product uses a broken or risky cryptographic algorithm or protocol.

1002 vulnerabilities reference this CWE, most recent first.

CVE-2025-54426 (GCVE-0-2025-54426)

Vulnerability from cvelistv5 – Published: 2025-07-28 20:08 – Updated: 2025-07-28 20:26
VLAI
Title
Polkadot Frontier contains silent failure in Curve25519 arithmetic precompiles with malformed points
Summary
Polkadot Frontier is an Ethereum and EVM compatibility layer for Polkadot and Substrate. In versions prior to commit 36f70d1, the Curve25519Add and Curve25519ScalarMul precompiles incorrectly handle invalid Ristretto point representations. Instead of returning an error, they silently treat invalid input bytes as the Ristretto identity element, leading to potentially incorrect cryptographic results. This is fixed in commit 36f70d1.
Severity
9.9 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:H/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-28 20:25 UTC
CWE
  • CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
Impacted products
Vendor Product Version
polkadot-evm frontier Affected: < 36f70d1
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CVE-2025-49756 (GCVE-0-2025-49756)

Vulnerability from cvelistv5 – Published: 2025-07-08 16:57 – Updated: 2026-02-13 19:07
VLAI
Title
Office Developer Platform Security Feature Bypass Vulnerability
Summary
Use of a broken or risky cryptographic algorithm in Office Developer Platform allows an authorized attacker to bypass a security feature locally.
Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-09 13:55 UTC
CWE
  • CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
    cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*
Create a notification for this product.
Date Public
2025-07-08 07:00
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CVE-2025-49196 (GCVE-0-2025-49196)

Vulnerability from cvelistv5 – Published: 2025-06-12 14:20 – Updated: 2025-06-17 19:03
VLAI
Title
Deprecated TLS version supported
Summary
A service supports the use of a deprecated and unsafe TLS version. This could be exploited to expose sensitive information, modify data in unexpected ways or spoof identities of other users or devices, affecting the confidentiality and integrity of the device.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-12 14:38 UTC
CWE
  • CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
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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/2025/… vendor-advisoryx_csaf
Impacted products
Vendor Product Version
SICK AG SICK Field Analytics Affected: all versions (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-48946 (GCVE-0-2025-48946)

Vulnerability from cvelistv5 – Published: 2025-05-30 19:21 – Updated: 2025-05-30 20:43
VLAI
Title
liboqs affected by theoretical design flaw in HQC
Summary
liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. liboqs prior to version 0.13.0 supports the HQC algorithm, an algorithm with a theoretical design flaw which leads to large numbers of malformed ciphertexts sharing the same implicit rejection value. Currently, no concrete attack on the algorithm is known. However, prospective users of HQC must take extra care when using the algorithm in protocols involving key derivation. In particular, HQC does not provide the same security guarantees as Kyber or ML-KEM. There is currently no patch for the HQC flaw available in liboqs, so HQC is disabled by default in liboqs starting from version 0.13.0. OQS will update its implementation after the HQC team releases an updated algorithm specification.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-30 20:43 UTC
CWE
  • CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
Impacted products
Vendor Product Version
open-quantum-safe liboqs Affected: < 0.13.0
Create a notification for this product.
Show details on NVD website
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CVE-2025-46371 (GCVE-0-2025-46371)

Vulnerability from cvelistv5 – Published: 2026-05-22 13:43 – Updated: 2026-05-22 16:24
VLAI
Summary
Dell PowerFlex Manager, version(s) <=4.6.2, contain(s) a Use of a Broken or Risky Cryptographic Algorithm vulnerability in the ssh. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Protection mechanism bypass.
Severity
3.6 (Low)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-22 16:23 UTC
CWE
  • CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
Impacted products
Vendor Product Version
Dell PowerFlex Manager (Appliance) Affected: 0 , < IC 48.378.00 (semver)
Affected: 0 , < IC 48.383.00 (semver)
Create a notification for this product.
Dell PowerFlex Manager (Rack) Affected: 0 , < 3.7.8.0 (semver)
Affected: 0 , < 3.8.3.0 (semver)
Create a notification for this product.
Dell PowerFlex Manager Affected: 0 , ≤ 4.6.2 (semver)
Create a notification for this product.
Date Public
2025-11-13 06:30
Show details on NVD website
To clipboard 

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CVE-2025-43913 (GCVE-0-2025-43913)

Vulnerability from cvelistv5 – Published: 2025-10-07 18:54 – Updated: 2025-10-07 19:10
VLAI
Summary
Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release versions 7.7.1.0 through 8.3.0.15, LTS2025 release version 8.3.1.0, LTS2024 release versions 7.13.1.0 through 7.13.1.30, LTS 2023 release versions 7.10.1.0 through 7.10.1.60, contain an Use of a Broken or Risky Cryptographic Algorithm vulnerability in the DDOS. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to information disclosure. The vulnerability could be leveraged by attackers to conduct phishing attacks that cause users to divulge sensitive information.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-07 19:07 UTC
CWE
  • CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
Impacted products
Date Public
2025-10-01 17:00
Show details on NVD website
To clipboard 

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CVE-2025-43909 (GCVE-0-2025-43909)

Vulnerability from cvelistv5 – Published: 2025-10-07 19:11 – Updated: 2025-10-07 19:27
VLAI
Summary
Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release versions 7.7.1.0 through 8.3.0.15, LTS2025 release version 8.3.1.0, LTS2024 release versions 7.13.1.0 through 7.13.1.30, LTS 2023 release versions 7.10.1.0 through 7.10.1.60, contain an Use of a Broken or Risky Cryptographic Algorithm vulnerability in the DD boost. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Information exposure.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-07 19:27 UTC
CWE
  • CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
Impacted products
Date Public
2025-10-01 17:00
Show details on NVD website
To clipboard 

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CVE-2025-43891 (GCVE-0-2025-43891)

Vulnerability from cvelistv5 – Published: 2025-10-07 18:43 – Updated: 2025-10-07 19:25
VLAI
Summary
Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release versions 7.7.1.0 through 8.3.0.15, LTS2025 release version 8.3.1.0, LTS2024 release versions 7.13.1.0 through 7.13.1.30, LTS 2023 release versions 7.10.1.0 through 7.10.1.60, contain an use of a Broken or Risky Cryptographic Algorithm vulnerability in the Authentication. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Information disclosure.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-07 19:25 UTC
CWE
  • CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
Impacted products
Date Public
2025-10-01 17:00
Show details on NVD website
To clipboard 

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CVE-2025-43723 (GCVE-0-2025-43723)

Vulnerability from cvelistv5 – Published: 2025-11-10 19:10 – Updated: 2025-11-10 19:38
VLAI
Summary
Dell PowerScale OneFS, versions prior to 9.10.1.3 and versions 9.11.0.0 through 9.12.0.0, contains a use of a broken or risky cryptographic algorithm vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Information disclosure.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-10 19:38 UTC
CWE
  • CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
Impacted products
Vendor Product Version
Dell PowerScale OneFS Affected: N/A , < 9.10.1.3 (semver)
Affected: N/A , < 9.12.0.0 (semver)
Create a notification for this product.
Date Public
2025-11-10 18:00
Show details on NVD website
To clipboard 

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CVE-2025-41711 (GCVE-0-2025-41711)

Vulnerability from cvelistv5 – Published: 2026-03-10 08:26 – Updated: 2026-03-10 16:51
VLAI
Title
Use of a Broken or Risky Cryptographic Algorithm for firmware images of power analyzer
Summary
An unauthenticated remote attacker can use firmware images to extract password hashes and brute force plaintext passwords of accounts with limited access.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-10 15:57 UTC
CWE
  • CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
Impacted products
Credits
Deutsche Telekom Security (DT Security)
Show details on NVD website
To clipboard 

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Mitigation MIT-24
Architecture and Design

Strategy: Libraries or Frameworks

  • When there is a need to store or transmit sensitive data, use strong, up-to-date cryptographic algorithms to encrypt that data. Select a well-vetted algorithm that is currently considered to be strong by experts in the field, and use well-tested implementations. As with all cryptographic mechanisms, the source code should be available for analysis.
  • For example, US government systems require FIPS 140-2 certification [REF-1192].
  • Do not develop custom or private cryptographic algorithms. They will likely be exposed to attacks that are well-understood by cryptographers. Reverse engineering techniques are mature. If the algorithm can be compromised if attackers find out how it works, then it is especially weak.
  • Periodically ensure that the cryptography has not become obsolete. Some older algorithms, once thought to require a billion years of computing time, can now be broken in days or hours. This includes MD4, MD5, SHA1, DES, and other algorithms that were once regarded as strong. [REF-267]
Mitigation MIT-52
Architecture and Design

Ensure that the design allows one cryptographic algorithm to be replaced with another in the next generation or version. Where possible, use wrappers to make the interfaces uniform. This will make it easier to upgrade to stronger algorithms. With hardware, design the product at the Intellectual Property (IP) level so that one cryptographic algorithm can be replaced with another in the next generation of the hardware product.

Mitigation
Architecture and Design

Carefully manage and protect cryptographic keys (see CWE-320). If the keys can be guessed or stolen, then the strength of the cryptography itself is irrelevant.

Mitigation MIT-4
Architecture and Design

Strategy: Libraries or Frameworks

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
  • Industry-standard implementations will save development time and may be more likely to avoid errors that can occur during implementation of cryptographic algorithms. Consider the ESAPI Encryption feature.
Mitigation MIT-25
Implementation Architecture and Design

When using industry-approved techniques, use them correctly. Don't cut corners by skipping resource-intensive steps (CWE-325). These steps are often essential for preventing common attacks.

CAPEC-20: Encryption Brute Forcing

An attacker, armed with the cipher text and the encryption algorithm used, performs an exhaustive (brute force) search on the key space to determine the key that decrypts the cipher text to obtain the plaintext.

CAPEC-459: Creating a Rogue Certification Authority Certificate

An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.

CAPEC-473: Signature Spoof

An attacker generates a message or datablock that causes the recipient to believe that the message or datablock was generated and cryptographically signed by an authoritative or reputable source, misleading a victim or victim operating system into performing malicious actions.

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.

CAPEC-608: Cryptanalysis of Cellular Encryption

The use of cryptanalytic techniques to derive cryptographic keys or otherwise effectively defeat cellular encryption to reveal traffic content. Some cellular encryption algorithms such as A5/1 and A5/2 (specified for GSM use) are known to be vulnerable to such attacks and commercial tools are available to execute these attacks and decrypt mobile phone conversations in real-time. Newer encryption algorithms in use by UMTS and LTE are stronger and currently believed to be less vulnerable to these types of attacks. Note, however, that an attacker with a Cellular Rogue Base Station can force the use of weak cellular encryption even by newer mobile devices.

CAPEC-614: Rooting SIM Cards

SIM cards are the de facto trust anchor of mobile devices worldwide. The cards protect the mobile identity of subscribers, associate devices with phone numbers, and increasingly store payment credentials, for example in NFC-enabled phones with mobile wallets. This attack leverages over-the-air (OTA) updates deployed via cryptographically-secured SMS messages to deliver executable code to the SIM. By cracking the DES key, an attacker can send properly signed binary SMS messages to a device, which are treated as Java applets and are executed on the SIM. These applets are allowed to send SMS, change voicemail numbers, and query the phone location, among many other predefined functions. These capabilities alone provide plenty of potential for abuse.

CAPEC-97: Cryptanalysis

Cryptanalysis is a process of finding weaknesses in cryptographic algorithms and using these weaknesses to decipher the ciphertext without knowing the secret key (instance deduction). Sometimes the weakness is not in the cryptographic algorithm itself, but rather in how it is applied that makes cryptanalysis successful. An attacker may have other goals as well, such as: Total Break (finding the secret key), Global Deduction (finding a functionally equivalent algorithm for encryption and decryption that does not require knowledge of the secret key), Information Deduction (gaining some information about plaintexts or ciphertexts that was not previously known) and Distinguishing Algorithm (the attacker has the ability to distinguish the output of the encryption (ciphertext) from a random permutation of bits).

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