CVE-2011-1887

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.8Exploit: NoneExposed: 0

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

win32k.sys in the kernel-mode drivers in Microsoft Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows local users to gain privileges via a crafted application that triggers a NULL pointer dereference, a different vulnerability than other CVEs listed in MS11-054, aka "Win32k Null Pointer De-reference Vulnerability."

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
63.8%
KEV
Not listed

Published

July 13, 2011

Last Modified

April 29, 2026

Advisory Details (3)

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

About Secunia Research | Flexera

http://secunia.com/advisories/45186
generic

Microsoft Security Bulletin MS11-054 - Important | Microsoft Learn

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-054
generic
http://www.securityfocus.com/bid/48601

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 42× 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.

  1. 2026-07-15 16:54 UTCEPSS rescore
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  4. 2026-07-13 22:25 UTCEPSS rescore
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  1. 2026-06-25 13:46 UTCEPSS rescore
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  21. 2026-06-13 22:57 UTCEPSS rescore
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  24. 2026-06-11 13:56 UTCEPSS rescore
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  46. 2026-05-29 13:41 UTCEPSS rescore
  47. 2026-05-29 13:40 UTCEPSS rescore
  48. 2026-05-29 07:33 UTCEG score recompute
  49. 2026-05-29 07:33 UTCGHSA enrichment
  50. 2026-05-28 13:42 UTCEPSS rescore
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  59. 2026-05-24 16:43 UTCEPSS rescore
  60. 2026-05-22 21:15 UTCEPSS rescore
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  63. 2026-05-20 22:37 UTCEPSS rescore
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  69. 2026-05-18 21:29 UTCEPSS rescore
  70. 2026-05-18 21:29 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2011-1887?
CVE-2011-1887 is a high vulnerability published on July 13, 2011. win32k.sys in the kernel-mode drivers in Microsoft Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows local users to gain privileges via a crafted application that triggers a NULL pointer dereference, a different vulnerability than other CVEs…
When was CVE-2011-1887 disclosed?
CVE-2011-1887 was first published in the National Vulnerability Database on July 13, 2011, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-1887 actively exploited?
CVE-2011-1887 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 63.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2011-1887?
CVE-2011-1887 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2011-1887?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-1887, 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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