CVE-2012-1889

HIGHNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-06-08), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 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
8.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 84%CVSS: 8.8Exploit: NoneExposed: 0

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

Microsoft XML Core Services 3.0, 4.0, 5.0, and 6.0 accesses uninitialized memory locations, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.

CVSS v3
8.8
EG Score
9.0(high)
EPSS
99.7%
KEV
⚠ Exploited

Published

June 13, 2012

Last Modified

April 22, 2026

Advisory Details (1)

Auto-updated May 2, 2026
No patch confirmed yet.
generic

Microsoft Security Bulletin MS12-043 - Critical | Microsoft Learn

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-043

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 81× in last 7d / 365× 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 488 total refreshes for this CVE.

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

Publicly available exploits

(3 references)

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

  • GitHub PoCwhu-enjoy/CVE-2012-1889
    First seen Sep 25, 2016

    这里保存着我学习CVE-2012-1889这个漏洞的利用所用到的文件

    Open source ↗
  • Exploit-DBEDB-19186✓ verified
    First seen Jun 16, 2012

    Microsoft XML Core Services - MSXML Uninitialized Memory Corruption (MS12-043) (Metasploit)

    Open source ↗
  • Metasploitexploit/windows/browser/msxml_get_definition_code_exec✓ verified
    First seen Jun 12, 2012

    MS12-043 Microsoft XML Core Services MSXML Uninitialized Memory Corruption

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2012-1889?
CVE-2012-1889 is a high vulnerability published on June 13, 2012. Microsoft XML Core Services 3.0, 4.0, 5.0, and 6.0 accesses uninitialized memory locations, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.
When was CVE-2012-1889 disclosed?
CVE-2012-1889 was first published in the National Vulnerability Database on June 13, 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-2012-1889 actively exploited?
Yes. CISA added CVE-2012-1889 to the Known Exploited Vulnerabilities catalog on June 8, 2022, affecting Microsoft XML Core Services. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2012-1889?
CVE-2012-1889 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2012-1889?
CVE-2012-1889 affects Microsoft XML Core Services. 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-2012-1889?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-1889, 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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