CVE-2009-4496

Exp

Boa 0.94.14rc21 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.

Published: 2010-01-13 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-4496 is rated High Exploit Risk (68.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 12.08%, 96th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2009-4496

EDB-ID Source Kind Published Link
33504 exploit_db edb 2010-01-11 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-4496

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 2026-06-17 11.98% 12.08% +0.10%
2 2026-06-15 10.43% 11.98% +1.55%
3 2026-05-22 — 10.43% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-4496

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N 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:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2009-4496

OS Trackers for CVE-2009-4496

vendor priority summary link
ubuntu negligible CVE-2009-4496 negligible priority: Ubuntu including 1 source packages (boa), 21 status rows across 21 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 13, DNE 6, needs-triage 1, released 1. https://ubuntu.com/security/CVE-2009-4496

Affected software / configurations for CVE-2009-4496

Vendor Product Version Raw CPE
boa boa 0.94.14rc21 cpe:2.3:a:boa:boa:0.94.14rc21:*:*:*:*:*:*:*

References for CVE-2009-4496

cvelogic Threat Intelligence