What’s Vulnerable › Vulnerabilities

CVE-2021-25269

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-11-26 · updated 2026-06-17
• Weakness: CWE-428

Description

A local administrator could prevent the HMPA service from starting despite tamper protection using an unquoted service path vulnerability in the HMPA component of Sophos Intercept X Advanced and Sophos Intercept X Advanced for Server before version 2.0.23, as well as Sophos Exploit Prevention before version 3.8.3.

Affected products

• Sophos Exploit Prevention: before 3.8.3 — fixed in 3.8.3
• Sophos Intercept X Endpoint: before 2.0.23 — fixed in 2.0.23
• Sophos Intercept X For Server: before 2.0.23 — fixed in 2.0.23

How to fix

Upgrade to a fixed version: Sophos Exploit Prevention 3.8.3; Sophos Intercept X Endpoint 2.0.23; Sophos Intercept X For Server 2.0.23. Check the vendor advisory for mitigations.

References

• https://www.sophos.com/en-us/security-advisories/sophos-sa-20211126-ixa-hmpa-local-dos
• https://www.sophos.com/en-us/security-advisories/sophos-sa-20211126-ixa-hmpa-local-dos

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