CVE-2012-1889: Microsoft XML Core Services Memory Corruption Vulnerability
Vulnerability summary
CVE-2012-1889 is a high (CVSS 9.3) Out-of-bounds Write vulnerability in Microsoft XML Core Services. It is known to be exploited: CISA lists it, first on 08-06-2022. EPSS estimates a 83.52% chance of exploitation in the next 30 days, higher than 99.6% of scored vulnerabilities. 2 public exploits are recorded.
Timeline
- 13-06-2012PublishedVulnerability first disclosed.
- 08-06-2022Added to CISA KEVMicrosoft XML Core Services Memory Corruption Vulnerability
- 22-06-2022CISA remediation dueApply updates per vendor instructions.
- 22-10-2025Last modifiedVulnerability information updated.
Description
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 metrics
3 scores · 2 sources · 2 versions- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
83.52%
Chance of exploitation in the next 30 days
Percentile
100%
Versus all other CVEs
30-day change
0.00 pp
From 83.52% on 19-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 08-06-2022
- Federal due date
- 22-06-2022
CISA required action
Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2012-1889
Public exploits
2 foundMicrosoft XML Core Services - MSXML Uninitialized Memory Corruption (MS12-043) (Metasploit)
Maturity: weaponized
MS12-043 Microsoft XML Core Services MSXML Uninitialized Memory Corruption
exploit/windows/browser/msxml_get_definition_code_exec
Maturity: weaponized
Weaknesses
CWE · root causeAffected systems
Microsoft1 product
- xml_core_services3.0 | 4.0 | 6.0 | 5.0
1 vendor · 1 product
References
6 links- www.us-cert.gov/cas/techalerts/TA12-192A.htmlThird Party AdvisoryX Refsource CERTUS Government Resource
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15195VDB EntrySignatureX Refsource OVALBroken Link
- docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-043Vendor AdvisoryX Refsource MSPatch
- www.us-cert.gov/cas/techalerts/TA12-174A.htmlThird Party AdvisoryX Refsource CERTUS Government Resource
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-1889Government ResourceUS Government Resource