CVE-2025-27508: Weak Crypto (CVSS 7.5)

Description

Emissary is a P2P based data-driven workflow engine. The ChecksumCalculator class within allows for hashing and checksum generation, but it includes or defaults to algorithms that are no longer recommended for secure cryptographic use cases (e.g., SHA-1, CRC32, and SSDEEP). These algorithms, while possibly valid for certain non-security-critical tasks, can expose users to security risks if used in scenarios where strong cryptographic guarantees are required. This issue is fixed in 8.24.0.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness Type (CWE)

CWE-327 CWE-327

References

Other References

https://github.com/NationalSecurityAgency/emissary/commit/da3a81a8977577597ff2a944820a5ae4e9762368 https://github.com/NationalSecurityAgency/emissary/security/advisories/GHSA-hw43-fcmm-3m5g https://github.com/NationalSecurityAgency/emissary/security/advisories/GHSA-hw43-fcmm-3m5g

Frequently Asked Questions

What is CVE-2025-27508? +

Emissary is a P2P based data-driven workflow engine. The ChecksumCalculator class within allows for hashing and checksum generation, but it includes or defaults to algorithms that are no longer recommended for secure cryptographic use cases (e.g., SHA-1, CRC32, and SSDEEP). These algorithms, while possibly valid for certain non-security-critical tasks, can expose users to security risks if used in scenarios where strong cryptographic guarantees are required. This issue is fixed in 8.24.0. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-27508? +

CVE-2025-27508 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2025-27508? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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