What is CVE-2025-27508?

CVE-2025-27508 is a high-severity vulnerability in Nationalsecurityagency Emissary, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2025-03-05.

How severe is CVE-2025-27508?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Nationalsecurityagency Emissary

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.

Vulnerability class: POODLE (CVE-2014-3566)

EPSS: 0.002 (9.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Nationalsecurityagency Emissary — versions < 8.24.0

Weakness classification (CWE)

CWE-327 — Use of a Broken or Risky Cryptographic Algorithm

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-27508?: CVE-2025-27508 is a high-severity vulnerability in Nationalsecurityagency Emissary, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2025-03-05.
How severe is CVE-2025-27508?: High severity. CVSS v3 base score is 7.5 out of 10.