CVE-2009-2863 json
Race condition in the Firewall Authentication Proxy feature in Cisco IOS 12.0 through 12.4 allows remote attackers to bypass authentication…
published 2009-09-28 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-2853
- cvss
- 7.1
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.5%
- EPSS 2.5% chance of exploitation in 30 days, percentile 84%
- public exploits
- 0
- none known
Summary
Race condition in the Firewall Authentication Proxy feature in Cisco IOS 12.0 through 12.4 allows remote attackers to bypass authentication, or bypass the consent web page, via a crafted request, aka Bug ID CSCsy15227.
Exploit prediction
2.47% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.1 | AV:N/AC:M/Au:N/C:C/I:N/A:N |
Classification
- Weakness
-
- CWE-287 Improper Authentication
- Technology feeds
References
-
cisco.com
/en/US/products/products_security_advisory09186a0080af8132.shtml
vendor-advisory
-
tools.cisco.com
/security/center/viewAlert.x?alertId=18882
vendor-advisory
-
securityfocus.com
/bid/36491
vdb-entry
-
securitytracker.com
/id?1022935
vdb-entry
-
exchange.xforce.ibmcloud.com
/vulnerabilities/53453
vdb-entry
-
osvdb.org
/58340
vdb-entry
Sources
- CVE List CVE-2009-2863
- NVD CVE-2009-2863
Fencer Vulns 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.