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CVE-2010-4344: Exim Heap-Based Buffer Overflow Vulnerability

criticalknown exploitedpublic exploitCVE-2010-4344
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Heap-based buffer overflow in the string_vformat function in string.c in Exim before 4.70 allows remote attackers to execute arbitrary code via an SMTP session.

CSIRTS triage

vendor: Eximproduct: EximRemote code executionaffected: <4.70
What
Heap-based buffer overflow in Exim allows remote attackers to execute arbitrary code via an SMTP session.
Who is affected
Deployments of Exim versions prior to 4.70 are affected.
Urgency
Remediation is urgent as the vulnerability is critical and actively exploited.
Action
Upgrade Exim to version 4.70 or later.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-03-25
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2010-4344

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2010-4344coverage & exploitation statusNVD · CVE.org

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