CVE-2010-4345

HIGHNVD 7.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
7.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 18%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

Exim 4.72 and earlier allows local users to gain privileges by leveraging the ability of the exim user account to specify an alternate configuration file with a directive that contains arbitrary commands, as demonstrated by the spool_directory directive.

CVSS v3
7.8
EG Score
9.0(high)
EPSS
96.9%
KEV
⚠ Exploited

Published

December 14, 2010

Last Modified

April 21, 2026

Advisory Details (8)

Auto-updated May 19, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

About Secunia Research | Flexera

http://secunia.com/advisories/43243
generic

About Secunia Research | Flexera

http://secunia.com/advisories/43128
generic

About Secunia Research | Flexera

http://secunia.com/advisories/42930
generic

About Secunia Research | Flexera

http://secunia.com/advisories/42576
generic

oss-security - Exim remote root

http://openwall.com/lists/oss-security/2010/12/10/1
generic🔴 Active Exploitation

Re: [exim-dev] Remote root vulnerability in Exim

http://lists.exim.org/lurker/message/20101210.164935.385e04d0.en.html
generic

Re: [exim-dev] [Exim-maintainers] Remote root vulnerability in Exim

http://lists.exim.org/lurker/message/20101209.172233.abcba158.en.html
generic

Exim Internet Mailer

http://bugs.exim.org/show_bug.cgi?id=1044

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuexim4-daemon-light (4.71-3ubuntu1.1) @ lucid2026-07-22ubuntu
redhatexim-0:4.63-5.el5_6.22011-01-17redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 93× in last 7d / 380× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 720 total refreshes for this CVE.

  1. 2026-07-22 18:53 UTCVendor advisory
  2. 2026-07-22 18:53 UTCGHSA enrichment
  3. 2026-07-22 14:33 UTCEG score recompute
  4. 2026-07-22 14:33 UTCVendor advisory
  5. 2026-07-22 14:33 UTCGHSA enrichment
  6. 2026-07-22 14:03 UTCEPSS rescore
  7. 2026-07-22 14:03 UTCEPSS rescore
  8. 2026-07-22 10:13 UTCVendor advisory
  9. 2026-07-22 10:13 UTCGHSA enrichment
  10. 2026-07-22 05:54 UTCVendor advisory
  11. 2026-07-22 05:54 UTCGHSA enrichment
  12. 2026-07-22 01:36 UTCVendor advisory
  13. 2026-07-22 01:36 UTCGHSA enrichment
  14. 2026-07-21 20:49 UTCVendor advisory
  15. 2026-07-21 20:49 UTCGHSA enrichment
  16. 2026-07-21 16:26 UTCEG score recompute
  17. 2026-07-21 16:26 UTCVendor advisory
  18. 2026-07-21 16:26 UTCGHSA enrichment
  19. 2026-07-21 15:20 UTCEPSS rescore
  20. 2026-07-21 14:37 UTCCISA KEV update
  21. 2026-07-21 12:07 UTCVendor advisory
  22. 2026-07-21 12:07 UTCGHSA enrichment
  23. 2026-07-21 07:43 UTCVendor advisory
  24. 2026-07-21 07:43 UTCGHSA enrichment
  25. 2026-07-21 03:24 UTCVendor advisory
Show 75 more
  1. 2026-07-21 03:24 UTCGHSA enrichment
  2. 2026-07-20 23:05 UTCVendor advisory
  3. 2026-07-20 23:05 UTCGHSA enrichment
  4. 2026-07-20 18:46 UTCEG score recompute
  5. 2026-07-20 18:46 UTCVendor advisory
  6. 2026-07-20 18:46 UTCGHSA enrichment
  7. 2026-07-20 17:03 UTCEPSS rescore
  8. 2026-07-20 14:27 UTCVendor advisory
  9. 2026-07-20 14:27 UTCGHSA enrichment
  10. 2026-07-20 10:08 UTCVendor advisory
  11. 2026-07-20 10:08 UTCGHSA enrichment
  12. 2026-07-20 05:49 UTCVendor advisory
  13. 2026-07-20 05:49 UTCGHSA enrichment
  14. 2026-07-20 01:31 UTCVendor advisory
  15. 2026-07-20 01:31 UTCGHSA enrichment
  16. 2026-07-19 21:12 UTCVendor advisory
  17. 2026-07-19 21:12 UTCGHSA enrichment
  18. 2026-07-19 16:53 UTCVendor advisory
  19. 2026-07-19 16:53 UTCGHSA enrichment
  20. 2026-07-19 12:34 UTCVendor advisory
  21. 2026-07-19 12:34 UTCGHSA enrichment
  22. 2026-07-19 08:16 UTCVendor advisory
  23. 2026-07-19 08:16 UTCGHSA enrichment
  24. 2026-07-19 03:57 UTCEG score recompute
  25. 2026-07-19 03:57 UTCVendor advisory
  26. 2026-07-19 03:57 UTCGHSA enrichment
  27. 2026-07-19 02:25 UTCEPSS rescore
  28. 2026-07-18 23:37 UTCVendor advisory
  29. 2026-07-18 23:37 UTCGHSA enrichment
  30. 2026-07-18 19:19 UTCVendor advisory
  31. 2026-07-18 19:19 UTCGHSA enrichment
  32. 2026-07-18 14:59 UTCVendor advisory
  33. 2026-07-18 14:59 UTCGHSA enrichment
  34. 2026-07-18 10:40 UTCEG score recompute
  35. 2026-07-18 10:40 UTCVendor advisory
  36. 2026-07-18 10:40 UTCGHSA enrichment
  37. 2026-07-18 10:00 UTCEPSS rescore
  38. 2026-07-18 06:19 UTCVendor advisory
  39. 2026-07-18 06:18 UTCGHSA enrichment
  40. 2026-07-18 01:59 UTCVendor advisory
  41. 2026-07-18 01:59 UTCGHSA enrichment
  42. 2026-07-17 21:40 UTCVendor advisory
  43. 2026-07-17 21:40 UTCGHSA enrichment
  44. 2026-07-17 17:21 UTCVendor advisory
  45. 2026-07-17 17:21 UTCGHSA enrichment
  46. 2026-07-17 13:01 UTCVendor advisory
  47. 2026-07-17 13:01 UTCGHSA enrichment
  48. 2026-07-17 08:41 UTCEG score recompute
  49. 2026-07-17 08:41 UTCVendor advisory
  50. 2026-07-17 08:41 UTCGHSA enrichment
  51. 2026-07-17 04:22 UTCVendor advisory
  52. 2026-07-17 04:22 UTCGHSA enrichment
  53. 2026-07-17 00:03 UTCVendor advisory
  54. 2026-07-17 00:03 UTCGHSA enrichment
  55. 2026-07-16 19:44 UTCVendor advisory
  56. 2026-07-16 19:44 UTCGHSA enrichment
  57. 2026-07-16 17:04 UTCCISA KEV update
  58. 2026-07-16 16:58 UTCEPSS rescore
  59. 2026-07-16 15:25 UTCVendor advisory
  60. 2026-07-16 15:25 UTCGHSA enrichment
  61. 2026-07-16 11:05 UTCVendor advisory
  62. 2026-07-16 11:05 UTCGHSA enrichment
  63. 2026-07-16 06:46 UTCVendor advisory
  64. 2026-07-16 06:46 UTCGHSA enrichment
  65. 2026-07-16 02:26 UTCVendor advisory
  66. 2026-07-16 02:26 UTCGHSA enrichment
  67. 2026-07-15 22:08 UTCVendor advisory
  68. 2026-07-15 22:08 UTCGHSA enrichment
  69. 2026-07-15 17:47 UTCVendor advisory
  70. 2026-07-15 17:47 UTCGHSA enrichment
  71. 2026-07-15 16:54 UTCEPSS rescore
  72. 2026-07-15 16:54 UTCEPSS rescore
  73. 2026-07-15 16:49 UTCCISA KEV update
  74. 2026-07-15 15:04 UTCCISA KEV update
  75. 2026-07-15 13:27 UTCVendor advisory

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-16925✓ verified
    First seen Dec 16, 2010

    Exim4 < 4.69 - string_format Function Heap Buffer Overflow (Metasploit)

    Open source ↗
  • Metasploitexploit/unix/smtp/exim4_string_format✓ verified
    First seen Dec 7, 2010

    Exim4 string_format Function Heap Buffer Overflow

    Open source ↗

Frequently asked(6)

What is CVE-2010-4345?
CVE-2010-4345 is a high vulnerability published on December 14, 2010. Exim 4.72 and earlier allows local users to gain privileges by leveraging the ability of the exim user account to specify an alternate configuration file with a directive that contains arbitrary commands, as demonstrated by the spool_directory directive.
When was CVE-2010-4345 disclosed?
CVE-2010-4345 was first published in the National Vulnerability Database on December 14, 2010, with the most recent update on April 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2010-4345 actively exploited?
Yes. CISA added CVE-2010-4345 to the Known Exploited Vulnerabilities catalog on March 25, 2022, affecting Exim Exim. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2010-4345?
CVE-2010-4345 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2010-4345?
CVE-2010-4345 affects Exim Exim. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2010-4345?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2010-4345, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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