CVE-2009-0233
The DNS Resolver Cache Service (aka DNSCache) in Windows DNS Server in Microsoft Windows 2000 SP4, Server 2003 SP1 and SP2, and Server…
- 5.8MediumCVSS base score
- 27.1%Exploitation in 30 daysEPSS · top 1.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The DNS Resolver Cache Service (aka DNSCache) in Windows DNS Server in Microsoft Windows 2000 SP4, Server 2003 SP1 and SP2, and Server 2008, when dynamic updates are enabled, does not reuse cached DNS responses in all applicable situations, which makes it easier for remote attackers to predict transaction IDs and poison caches by simultaneously sending crafted DNS queries and responses, aka "DNS Server Query Validation Vulnerability."
Timeline
ID reserved
By microsoft
- 50 days later
· 50 days later
Published
- 15 years later
· 15 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 | Medium5.8 | AV:N/AC:M/Au:N/C:N/I:P/A:P |
- EPSS (exploitation in 30 days)
- 27.1% · top 1.9% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.
Affected products
n/a
- affected n/a
References
10
- oval:org.mitre.oval:def:6228 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- TA09-069A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
- ADV-2009-0661 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 34217 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 33982 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://support.avaya.com/elmodocs2/security/ASA-2009-083.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
- MS09-008 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- 1021831 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- http://blogs.technet.com/srd/archive/2009/03/13/ms09-008-dns-and-wins-server-security-update-in-more-detail.aspx (opens in a new tab)x_refsource_CONFIRMx_transferred
- 52517 (opens in a new tab)vdb-entryx_refsource_OSVDBx_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-2009-0241 (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-2009-0233)Record last updated .