CVE-2011-2005 KEV EXPLOIT
7.8
HIGH · CVSS 3.1 · EPSS 31.5% (pctl 98)
Patch first
On CISA KEV — known exploited in the wild, due 2022-04-18.
Description
afd.sys in the Ancillary Function Driver in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 does not properly validate user-mode input passed to kernel mode, which allows local users to gain privileges via a crafted application, aka "Ancillary Function Driver Elevation of Privilege Vulnerability."
Scoring
| CVSS | 7.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 31.53% — more likely to be exploited than 98% of all CVEs |
| On CISA KEV | yes — remediate by 2022-04-18 |
| Public exploit | yes |
| Published | 2011-10-12 |
| Last modified | 2026-06-16 |
CISA KEV
| Name | Microsoft Ancillary Function Driver (afd.sys) Improper Input Validation Vulnerability |
|---|---|
| Added | 2022-03-28 |
| Due | 2022-04-18 |
| Vendor / product | Microsoft / Ancillary Function Driver (afd.sys) |
| Ransomware use | none reported |
Affected (2)
| Vendor | Product |
|---|---|
| microsoft | windows server 2003 |
| microsoft | windows xp |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Microsoft Windows - 'AfdJoinLeaf' Local Privilege Escalation (MS11-080) (Metasploit) | 2012-10-10 |
| exploit-db | Microsoft Windows XP/2003 - 'afd.sys' Local Privilege Escalation (MS11-080) | 2011-11-30 |
References
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-080
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13114
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-080
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13114
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-2005
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