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 37× in last 7d / 184× 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 399 total refreshes for this CVE.

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