CVE-2009-2863

NONECVSS 0.0Trending — 3 sources updated this week

0.0

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.

CVSS v3: —
EG Score: 0.0(none)
EPSS: 61.3%
KEV: Not listed

Published

September 28, 2009

Last Modified

April 23, 2026

References (12)

psirt@ciscohttp://osvdb.org/58340
psirt@ciscohttp://tools.cisco.com/security/center/viewAlert.x?alertId=18882
psirt@ciscohttp://www.cisco.com/en/US/products/products_security_advisory09186a0080af8132.shtml
psirt@ciscohttp://www.securityfocus.com/bid/36491
psirt@ciscohttp://www.securitytracker.com/id?1022935
psirt@ciscohttps://exchange.xforce.ibmcloud.com/vulnerabilities/53453
af854a3a-2127-422b-91ae-364da2661108http://osvdb.org/58340
af854a3a-2127-422b-91ae-364da2661108http://tools.cisco.com/security/center/viewAlert.x?alertId=18882
af854a3a-2127-422b-91ae-364da2661108http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8132.shtml
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/36491
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id?1022935
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/53453

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-287Improper Authentication

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:10 UTCepss_batch
2026-06-02 20:10 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 00:13 UTCepss_batch
2026-05-31 00:13 UTCepss_batch
2026-05-30 15:05 UTCEG score recompute
2026-05-30 15:05 UTCGHSA enrichment
2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch

Frequently asked(4)

What is CVE-2009-2863?

CVE-2009-2863 is a none vulnerability published on September 28, 2009. 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.

When was CVE-2009-2863 disclosed?

CVE-2009-2863 was first published in the National Vulnerability Database on September 28, 2009, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2009-2863 actively exploited?

CVE-2009-2863 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 61.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2009-2863?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-2863, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2009-2863

Explore →

Is Your Infrastructure Affected by CVE-2009-2863?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2009-2863

📅 Published

🔄 Last Modified

🔗 References (12)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2009-2863?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (12)

Frequently asked(4)

Related CVEs(same CWE)