CVE-2012-1889

CRITICALNVD 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
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 84%CVSS: 8.8Exploit: cisa kev · ssvc active · Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 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)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
84%
EPSS %ILE
100%
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 49× in last 7d / 198× 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 594 total refreshes for this CVE.

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