CVE-2011-2593 json
Integer overflow in the StartEpa method in the nsepacom ActiveX control (nsepa.exe) in Citrix Access Gateway Enterprise Edition Plug-in for…
published 2014-08-12 12 y ago modified 2026-06-16 4 mo ago also EUVD-2011-2576
- cvss
- 6.8
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.0%
- EPSS 4.0% chance of exploitation in 30 days, percentile 90%
- public exploits
- 0
- none known
Summary
Integer overflow in the StartEpa method in the nsepacom ActiveX control (nsepa.exe) in Citrix Access Gateway Enterprise Edition Plug-in for Windows 9.x before 9.3-57.5 and 10.0 before 10.0-69.4 allows remote attackers to execute arbitrary code via a crafted Content-Length HTTP header, which triggers a heap-based buffer overflow.
Patch / fix
- support.citrix.com/article/CTX134303 advisory
Exploit prediction
3.99% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-189 Numeric Errors
References
-
support.citrix.com
/article/CTX134303
patch, vendor-advisory
-
secunia.com
/advisories/45299
third-party-advisory
- secunia.com /secunia_research/2012-26
-
exchange.xforce.ibmcloud.com
/vulnerabilities/77317
vdb-entry
Sources
- CVE List CVE-2011-2593
- NVD CVE-2011-2593
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.