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CVE-2025-27508— Emissary Use of a Broken or Risky Cryptographic Algorithm

Quick assessment

Affected
NationalSecurityAgency emissary
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Emissary是National Security Agency开源的一个分布式 P2P 数据驱动工作流框架。 Emissary 8.24.0之前版本存在加密问题漏洞，该漏洞源于使用不安全加密算法导致安全风险。

CVSS 7.5 · High EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1568 · Dynamic Resolution
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I. Basic Information for CVE-2025-27508

Vulnerability Information
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Vulnerability Title
Emissary Use of a Broken or Risky Cryptographic Algorithm
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用已被攻破或存在风险的密码学算法
Source: CVE Program / CVE List V5
Vulnerability Title
Emissary 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Emissary是National Security Agency开源的一个分布式 P2P 数据驱动工作流框架。 Emissary 8.24.0之前版本存在加密问题漏洞，该漏洞源于使用不安全加密算法导致安全风险。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
NationalSecurityAgency emissary < 8.24.0 -

II. Public POCs for CVE-2025-27508

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7885 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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Trigger conditions & impact
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Exploit chain & mitigation
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III. Intelligence Information for CVE-2025-27508

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Patches & Fixes for CVE-2025-27508 (1)

Vendor Advisories for CVE-2025-27508 (1)

IV. Related Vulnerabilities

Same product: emissary
Same vendor: NationalSecurityAgency
Same weakness: CWE-327

V. Comments for CVE-2025-27508

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