CVE-2010-4344
Exploitation confirmed. First attested on 2022-03-25 by CISA-ADP, CISA KEV, GCVE · kevintel.
- Published2010-12-14
- WeaknessCWE-787
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
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.
Timeline
dates in UTCObserved activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2010-4344?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2010-4344?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 6.6 | = 6.06 | no fix published | NVD |
| 8.4 | = 8.04 | no fix published | NVD |
| 9.10 | = 9.10 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 11.1 | = 11.1 | no fix published | NVD |
| 11.2 | = 11.2 | no fix published | NVD |
| 11.3 | = 11.3 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 5.0 | = 5.0 | no fix published | NVD |
1 more product in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- CISA’s required action: Apply updates per vendor instructions.due 2022-04-15
Advisories and patches
- bugs.exim.orgPatch
- git.exim.orgPatch
- lists.exim.orgPatch
- secunia.comVendor Advisory
- secunia.comVendor Advisory
- secunia.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
CISA Known Exploited Vulnerability
- Date Added
- 2022-03-25
- Patch Due Date
- 2022-04-15
- Ransomware Use
- Unknown
- Required Action
- Apply updates per vendor instructions.
Sources
- CISA KEVKEV entry2022-03-25
- GCVEexploitation2022-03-25
- CISA-ADPSSVC decisionactive2025-02-07
- OpenCVESSVC decisionactive—
- CISA-ADPCVSS 3.19.82025-02-07
- NVDCVSS 3.19.8read 2026-10-23
- NVDCVSS 2.09.3read 2026-10-23
- CISA-ADPweakness (CWE)CWE-7872025-02-07
- NVDweakness (CWE)CWE-787read 2026-10-23
- FIRST EPSSEPSS score71.7 %read 2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2010-12-14
- Last Modified
- 2026-06-16
- NVD status
- Analyzed
Frequently asked questions
What is CVE-2010-4344?
Is CVE-2010-4344 actively exploited?
What is the CVSS score for CVE-2010-4344?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.