CVE-2011-1966 in the critical feed json
The DNS server in Microsoft Windows Server 2008 SP2, R2, and R2 SP1 does not properly handle NAPTR queries that trigger recursive processin…
published 2011-08-10 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1960
- cvss
- 10.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 55.2%
- EPSS 55.2% chance of exploitation in 30 days, percentile 99%
- public exploits
- 0
- none known
Summary
The DNS server in Microsoft Windows Server 2008 SP2, R2, and R2 SP1 does not properly handle NAPTR queries that trigger recursive processing, which allows remote attackers to execute arbitrary code via a crafted query, aka "DNS NAPTR Query Vulnerability."
Exploit prediction
55.20% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
docs.microsoft.com
/en-us/security-updates/securitybulletins/2011/ms11-058
vendor-advisory
-
oval.cisecurity.org
/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12764
vdb-entry, signature
-
us-cert.gov
/cas/techalerts/TA11-221A.html
third-party-advisory, us-government-resource
Sources
- CVE List CVE-2011-1966
- NVD CVE-2011-1966
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.