CVE-2012-3291

Heap-based buffer overflow in OpenConnect 3.18 allows remote servers to cause a denial of service via a crafted greeting banner.

Published: 2012-06-07 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-3291 is rated Moderate Risk (60.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.32%). EPSS rose +1.17% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2012-3291

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.15% 2.32% +1.17%
2 2025-03-30 1.30% 1.15% -0.15%
3 2025-03-29 — 1.30% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-3291

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2012-3291

OS Trackers for CVE-2012-3291

vendor priority summary link
debian not yet assigned CVE-2012-3291 not yet assigned priority: Debian including 1 source packages (openconnect), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2012-3291
ubuntu low CVE-2012-3291 low priority: Ubuntu including 1 source packages (openconnect), 16 status rows across 16 suites (hardy, lucid, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 9, ignored 3, DNE 2, released 2. https://ubuntu.com/security/CVE-2012-3291

Affected software / configurations for CVE-2012-3291

Vendor Product Version Raw CPE
infradead openconnect <= 3.17 cpe:2.3:a:infradead:openconnect:*:*:*:*:*:*:*:*
infradead openconnect 1.00 cpe:2.3:a:infradead:openconnect:1.00:*:*:*:*:*:*:*
infradead openconnect 1.10 cpe:2.3:a:infradead:openconnect:1.10:*:*:*:*:*:*:*
infradead openconnect 1.20 cpe:2.3:a:infradead:openconnect:1.20:*:*:*:*:*:*:*
infradead openconnect 1.30 cpe:2.3:a:infradead:openconnect:1.30:*:*:*:*:*:*:*
infradead openconnect 1.40 cpe:2.3:a:infradead:openconnect:1.40:*:*:*:*:*:*:*
infradead openconnect 2.00 cpe:2.3:a:infradead:openconnect:2.00:*:*:*:*:*:*:*
infradead openconnect 2.01 cpe:2.3:a:infradead:openconnect:2.01:*:*:*:*:*:*:*
infradead openconnect 2.10 cpe:2.3:a:infradead:openconnect:2.10:*:*:*:*:*:*:*
infradead openconnect 2.11 cpe:2.3:a:infradead:openconnect:2.11:*:*:*:*:*:*:*
infradead openconnect 2.12 cpe:2.3:a:infradead:openconnect:2.12:*:*:*:*:*:*:*
infradead openconnect 2.20 cpe:2.3:a:infradead:openconnect:2.20:*:*:*:*:*:*:*
infradead openconnect 2.21 cpe:2.3:a:infradead:openconnect:2.21:*:*:*:*:*:*:*
infradead openconnect 2.22 cpe:2.3:a:infradead:openconnect:2.22:*:*:*:*:*:*:*
infradead openconnect 2.23 cpe:2.3:a:infradead:openconnect:2.23:*:*:*:*:*:*:*
infradead openconnect 2.24 cpe:2.3:a:infradead:openconnect:2.24:*:*:*:*:*:*:*
infradead openconnect 2.25 cpe:2.3:a:infradead:openconnect:2.25:*:*:*:*:*:*:*
infradead openconnect 2.26 cpe:2.3:a:infradead:openconnect:2.26:*:*:*:*:*:*:*
infradead openconnect 3.00 cpe:2.3:a:infradead:openconnect:3.00:*:*:*:*:*:*:*
infradead openconnect 3.01 cpe:2.3:a:infradead:openconnect:3.01:*:*:*:*:*:*:*
infradead openconnect 3.02 cpe:2.3:a:infradead:openconnect:3.02:*:*:*:*:*:*:*
infradead openconnect 3.11 cpe:2.3:a:infradead:openconnect:3.11:*:*:*:*:*:*:*
infradead openconnect 3.12 cpe:2.3:a:infradead:openconnect:3.12:*:*:*:*:*:*:*
infradead openconnect 3.13 cpe:2.3:a:infradead:openconnect:3.13:*:*:*:*:*:*:*
infradead openconnect 3.14 cpe:2.3:a:infradead:openconnect:3.14:*:*:*:*:*:*:*
infradead openconnect 3.15 cpe:2.3:a:infradead:openconnect:3.15:*:*:*:*:*:*:*
infradead openconnect 3.16 cpe:2.3:a:infradead:openconnect:3.16:*:*:*:*:*:*:*

References for CVE-2012-3291

cvelogic Threat Intelligence