CVE-2011-2882 in the critical feed json
Stack-based buffer overflow in the NSEPA.NsepaCtrl.1 ActiveX control in nsepa.ocx in Citrix Access Gateway Enterprise Edition 8.1 before 8.…
published 2011-07-21 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-2856
- cvss
- 9.3
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 56.4%
- EPSS 56.4% chance of exploitation in 30 days, percentile 99%
- public exploits
- 2
- Metasploit, Exploit-DB
Summary
Stack-based buffer overflow in the NSEPA.NsepaCtrl.1 ActiveX control in nsepa.ocx in Citrix Access Gateway Enterprise Edition 8.1 before 8.1-67.7, 9.0 before 9.0-70.5, and 9.1 before 9.1-96.4 allows remote attackers to execute arbitrary code via crafted HTTP header data.
Timeline
- First public exploit (Metasploit exploit/windows/browser/citrix_gateway_actx)
- Published
Exploit prediction
56.37% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- Metasploit exploit/windows/browser/citrix_gateway_actx Citrix Gateway ActiveX Control Stack Based Buffer Overflow Vulnerability metasploit exploit, normal rank, 2011-07-14
- EDB-17762 Citrix Gateway - ActiveX Control Stack Buffer Overflow (Metasploit) remote, 2011-08-31
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
-
securityreason.com
/securityalert/8358
third-party-advisory
-
labs.idefense.com
/intelligence/vulnerabilities/display.php?id=929
third-party-advisory
Sources
- CVE List CVE-2011-2882
- NVD CVE-2011-2882
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.