CVE-2005-2827
The thread termination routine in the kernel for Windows NT 4.0 and 2000 (NTOSKRNL.EXE) allows local users to modify kernel memory and…
- 7.2HighCVSS base score
- 2.6%Exploitation in 30 daysEPSS · top 14% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
The thread termination routine in the kernel for Windows NT 4.0 and 2000 (NTOSKRNL.EXE) allows local users to modify kernel memory and execution flow via steps in which a terminating thread causes Asynchronous Procedure Call (APC) entries to free the wrong data, aka the "Windows Kernel Vulnerability."
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- Microsoft Windows Server 2000 Kernel - APC Data-Free Local Escalation (MS05-055) (Exploit-DB entry) (opens in a new tab)
EDB-ID 1407local, windowspublished 5 Jan 2006Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By microsoft
- 3 months later
· 3 months later
Published
- 19 years later
· 19 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 2.6% · top 14% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
Affected products
n/a
- affected n/a
References
16
- 18064 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2005-2868 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 15826 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- MS05-055 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- http://support.avaya.com/elmodocs2/security/ASA-2005-234.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2005-2909 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- win-apc-gain-privileges(23447) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 18311 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:1583 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- EEYEB-20051213 (opens in a new tab)third-party-advisoryx_refsource_EEYEx_transferred
- 252 (opens in a new tab)third-party-advisoryx_refsource_SREASONx_transferred
- 20051213 [EEYEB-20050523] Windows Kernel APC Data-Free Local Privilege Escalation Vulnerability (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 1015347 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 18823 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- http://www130.nortelnetworks.com/cgi-bin/eserv/cs/main.jsp?cscat=BLTNDETAIL&DocumentOID=375420 (opens in a new tab)x_refsource_MISCx_transferred
- 15821 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2005-2828 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2005-2827)Record last updated .