CVE-2009-4496
Boa
- Published
- 13 January 2010
- Last modified
- 16 June 2026
- CVSS
- 5.0 v2.0
- Severity
- medium
- EPSS
- 12.1% (96th pct)
- CISA KEV
- Not listed
- NVD status
- Modified
- Weaknesses
- CWE-20
AV:N/AC:L/Au:N/C:P/I:N/A:N
Description
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.
Exploitation
Not listed in the CISA Known Exploited Vulnerabilities catalogue as of 2026.09.04. That is an absence of confirmed public exploitation, not evidence that exploitation has not occurred. EPSS models a 12.1% probability of exploitation activity in the next 30 days, placing it in the top decile of all scored CVEs.
Affected products
| Product | Vendor | Type | Versions named |
|---|---|---|---|
| Boa | Boa | unknown | 0.92r, 0.94.13, 0.94.14, 0.94.14.21 +2 |
References
- http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041271.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041274.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041285.html
- http://secunia.com/advisories/39775
- http://www.securityfocus.com/archive/1/508830/100/0/threaded
- http://www.securityfocus.com/bid/37718
- http://www.ush.it/team/ush/hack_httpd_escape/adv.txt exploit
- http://www.vupen.com/english/advisories/2010/1133
- http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041271.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041274.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041285.html
- http://secunia.com/advisories/39775
- http://www.securityfocus.com/archive/1/508830/100/0/threaded
- http://www.securityfocus.com/bid/37718
- http://www.ush.it/team/ush/hack_httpd_escape/adv.txt exploit
- http://www.vupen.com/english/advisories/2010/1133
Record assembled from NVD, CISA KEV 2026.09.04 and FIRST EPSS 2026-09-04. Affected products are those NVD's CPE configuration names that fall inside this site's scope; a CVE may affect products outside it.