CVE-2025-27508: Emissary Use of a Broken or Risky Cryptographic Algorithm
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.
Classification
CVE ID: CVE-2025-27508
CVSS Base Severity: HIGH
CVSS Base Score: 7.5
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected Products
Vendor: NationalSecurityAgency
Product: emissary
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.02% (probability of being exploited)
EPSS Percentile: 2.68% (scored less or equal to compared to others)
EPSS Date: 2025-04-02 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-27508https://github.com/NationalSecurityAgency/emissary/security/advisories/GHSA-hw43-fcmm-3m5g
https://github.com/NationalSecurityAgency/emissary/commit/da3a81a8977577597ff2a944820a5ae4e9762368