CVE-2012-2539

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 2022-03-28), 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 — 4 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: 53%CVSS: 7.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Microsoft Word 2003 SP3, 2007 SP2 and SP3, and 2010 SP1; Word Viewer; Office Compatibility Pack SP2 and SP3; and Office Web Apps 2010 SP1 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted RTF data, aka "Word RTF 'listoverridecount' Remote Code Execution Vulnerability."

CVSS v3
7.8
EG Score
9.0(high)
EPSS
98.9%
KEV
⚠ Exploited

Published

December 12, 2012

Last Modified

April 22, 2026

Advisory Details (2)

Auto-updated May 19, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-2539
generic

Microsoft Security Bulletin MS12-079 - Critical | Microsoft Learn

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-079

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 85× in last 7d / 369× 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 493 total refreshes for this CVE.

  1. 2026-07-07 20:48 UTCEG score recompute
  2. 2026-07-07 20:48 UTCGHSA enrichment
  3. 2026-07-07 19:01 UTCCISA KEV update
  4. 2026-07-07 17:16 UTCCISA KEV update
  5. 2026-07-07 16:23 UTCEG score recompute
  6. 2026-07-07 16:23 UTCGHSA enrichment
  7. 2026-07-07 11:58 UTCEG score recompute
  8. 2026-07-07 11:58 UTCGHSA enrichment
  9. 2026-07-07 07:34 UTCEG score recompute
  10. 2026-07-07 07:33 UTCGHSA enrichment
  11. 2026-07-07 03:07 UTCEG score recompute
  12. 2026-07-07 03:07 UTCGHSA enrichment
  13. 2026-07-06 22:41 UTCEG score recompute
  14. 2026-07-06 22:41 UTCGHSA enrichment
  15. 2026-07-06 18:16 UTCEG score recompute
  16. 2026-07-06 18:16 UTCGHSA enrichment
  17. 2026-07-06 13:50 UTCEG score recompute
  18. 2026-07-06 13:50 UTCGHSA enrichment
  19. 2026-07-06 09:24 UTCEG score recompute
  20. 2026-07-06 09:24 UTCGHSA enrichment
  21. 2026-07-06 04:59 UTCEG score recompute
  22. 2026-07-06 04:59 UTCGHSA enrichment
  23. 2026-07-06 02:19 UTCEPSS rescore
  24. 2026-07-06 02:19 UTCEPSS rescore
  25. 2026-07-06 00:34 UTCEG score recompute
Show 75 more
  1. 2026-07-06 00:34 UTCGHSA enrichment
  2. 2026-07-05 20:10 UTCEG score recompute
  3. 2026-07-05 20:10 UTCGHSA enrichment
  4. 2026-07-05 15:45 UTCEG score recompute
  5. 2026-07-05 15:45 UTCGHSA enrichment
  6. 2026-07-05 11:21 UTCEG score recompute
  7. 2026-07-05 11:21 UTCGHSA enrichment
  8. 2026-07-05 06:56 UTCEG score recompute
  9. 2026-07-05 06:56 UTCGHSA enrichment
  10. 2026-07-05 02:32 UTCEG score recompute
  11. 2026-07-05 02:32 UTCGHSA enrichment
  12. 2026-07-04 22:07 UTCEG score recompute
  13. 2026-07-04 22:07 UTCGHSA enrichment
  14. 2026-07-04 17:43 UTCEG score recompute
  15. 2026-07-04 17:42 UTCGHSA enrichment
  16. 2026-07-04 13:18 UTCEG score recompute
  17. 2026-07-04 13:18 UTCGHSA enrichment
  18. 2026-07-04 08:52 UTCEG score recompute
  19. 2026-07-04 08:52 UTCGHSA enrichment
  20. 2026-07-04 04:27 UTCEG score recompute
  21. 2026-07-04 04:26 UTCGHSA enrichment
  22. 2026-07-04 00:01 UTCEG score recompute
  23. 2026-07-04 00:00 UTCGHSA enrichment
  24. 2026-07-03 19:35 UTCEG score recompute
  25. 2026-07-03 19:35 UTCGHSA enrichment
  26. 2026-07-03 15:11 UTCEG score recompute
  27. 2026-07-03 15:11 UTCGHSA enrichment
  28. 2026-07-03 10:45 UTCEG score recompute
  29. 2026-07-03 10:44 UTCGHSA enrichment
  30. 2026-07-03 06:18 UTCEG score recompute
  31. 2026-07-03 06:18 UTCGHSA enrichment
  32. 2026-07-03 01:51 UTCEG score recompute
  33. 2026-07-03 01:51 UTCGHSA enrichment
  34. 2026-07-02 21:26 UTCEG score recompute
  35. 2026-07-02 21:26 UTCGHSA enrichment
  36. 2026-07-02 17:02 UTCEG score recompute
  37. 2026-07-02 17:02 UTCGHSA enrichment
  38. 2026-07-02 14:01 UTCEPSS rescore
  39. 2026-07-02 12:38 UTCEG score recompute
  40. 2026-07-02 12:38 UTCGHSA enrichment
  41. 2026-07-02 08:09 UTCEG score recompute
  42. 2026-07-02 08:08 UTCGHSA enrichment
  43. 2026-07-02 03:43 UTCEG score recompute
  44. 2026-07-02 03:43 UTCGHSA enrichment
  45. 2026-07-01 23:18 UTCEG score recompute
  46. 2026-07-01 23:18 UTCGHSA enrichment
  47. 2026-07-01 19:16 UTCCISA KEV update
  48. 2026-07-01 18:54 UTCEG score recompute
  49. 2026-07-01 18:54 UTCGHSA enrichment
  50. 2026-07-01 15:02 UTCEPSS rescore
  51. 2026-07-01 14:30 UTCEG score recompute
  52. 2026-07-01 14:30 UTCGHSA enrichment
  53. 2026-07-01 10:05 UTCEG score recompute
  54. 2026-07-01 10:05 UTCGHSA enrichment
  55. 2026-07-01 05:41 UTCEG score recompute
  56. 2026-07-01 05:40 UTCGHSA enrichment
  57. 2026-07-01 01:14 UTCEG score recompute
  58. 2026-07-01 01:14 UTCGHSA enrichment
  59. 2026-06-30 23:19 UTCEPSS rescore
  60. 2026-06-30 23:19 UTCEPSS rescore
  61. 2026-06-30 20:49 UTCEG score recompute
  62. 2026-06-30 20:49 UTCGHSA enrichment
  63. 2026-06-30 16:25 UTCEG score recompute
  64. 2026-06-30 16:25 UTCGHSA enrichment
  65. 2026-06-30 12:00 UTCEG score recompute
  66. 2026-06-30 12:00 UTCGHSA enrichment
  67. 2026-06-30 07:36 UTCEG score recompute
  68. 2026-06-30 07:36 UTCGHSA enrichment
  69. 2026-06-30 03:10 UTCEG score recompute
  70. 2026-06-30 03:10 UTCGHSA enrichment
  71. 2026-06-29 22:45 UTCEG score recompute
  72. 2026-06-29 22:45 UTCGHSA enrichment
  73. 2026-06-29 19:12 UTCCISA KEV update
  74. 2026-06-29 18:21 UTCEG score recompute
  75. 2026-06-29 18:21 UTCGHSA enrichment

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Frequently asked(6)

What is CVE-2012-2539?
CVE-2012-2539 is a high vulnerability published on December 12, 2012. Microsoft Word 2003 SP3, 2007 SP2 and SP3, and 2010 SP1; Word Viewer; Office Compatibility Pack SP2 and SP3; and Office Web Apps 2010 SP1 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted RTF data, aka "Word RTF 'listoverridecount' Remote…
When was CVE-2012-2539 disclosed?
CVE-2012-2539 was first published in the National Vulnerability Database on December 12, 2012, with the most recent update on April 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2012-2539 actively exploited?
Yes. CISA added CVE-2012-2539 to the Known Exploited Vulnerabilities catalog on March 28, 2022, affecting Microsoft Word. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2012-2539?
CVE-2012-2539 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-2012-2539?
CVE-2012-2539 affects Microsoft Word. 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-2012-2539?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-2539, 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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