CVE-2010-4344
Out-of-bounds Write — is CVE-2010-4344real, exploitable, or a false positive? Here's the community ground truth.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 that includes two MAIL commands in conjunction with a large message containing crafted headers, leading to improper rejection logging.
References
Published
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Community ground truth
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Field notes & remediation
Verdicts are the quick signal — notes are the evidence and fixes behind them.
- 0
Exim Heap-Based Buffer Overflow Vulnerability — 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. Listed in the CISA KEV catalog (added 2022-03-25) — confirmed exploited in the wild, not theoretical. FIRST EPSS puts the chance of exploitation in the next 30 days at ~72%. Treat it as real and prioritize remediation over triage.
- 0
Required action for Exim Exim: Apply updates per vendor instructions. CISA set a federal remediation due date of 2022-04-15. After patching, verify the vulnerable path is no longer reachable before closing the finding.
Related CVEs
Same weakness — CWE-787 · Out-of-bounds Write.
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