CVE-2009-1202 — WebVPN on the Cisco Adaptive Security Appliances (ASA) device with software 8.0(4), 8.1.2, and 8.2.1 allows remote attackers to bypass certain protection mechanisms involving URL rewriting and HTML rewriting, and conduct cross-site scripting (XSS) attacks, by modifying the first hex-encoded character in a /+CSCO+ URI, aka Bug ID CSCsy80705

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MEDIUM

WebVPN on the Cisco Adaptive Security Appliances (ASA) device with software 8.0(4), 8.1.2, and 8.2.1 allows remote attackers to bypass certain protection mechanisms involving URL rewriting and HTML rewriting, and conduct cross-site scripting (XSS) attacks, by modifying the first hex-encoded character in a /+CSCO+ URI, aka Bug ID CSCsy80705

Published Jun 25, 2009

4.3

MEDIUM

CVSS 2.0

EPSS 1.98%

Description

WebVPN on the Cisco Adaptive Security Appliances (ASA) device with software 8.0(4), 8.1.2, and 8.2.1 allows remote attackers to bypass certain protection mechanisms involving URL rewriting and HTML rewriting, and conduct cross-site scripting (XSS) attacks, by modifying the first hex-encoded character in a /+CSCO+ URI, aka Bug ID CSCsy80705.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.98% 0.01984

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01984

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.98% (0.01984)	79.83th	v5 (v2026.06.15)
Jun 15, 2026	1.98% (0.01984)	77.92th	v5 (v2026.06.15)
Mar 17, 2025	0.36% (0.00362)	56.15th	v4 (v2025.03.14)
Dec 12, 2024	0.21% (0.00213)	60.22th	v3 (v2023.03.01)
Jun 13, 2024	0.21% (0.00213)	59.49th	v3 (v2023.03.01)
Mar 7, 2023	0.21% (0.00213)	57.46th	v3 (v2023.03.01)
Mar 6, 2023	1.21% (0.01213)	66.61th	v2 (v2022.01.01)
Feb 17, 2023	1.21% (0.01213)	66.22th	v2 (v2022.01.01)
Apr 1, 2022	1.21% (0.01213)	64.21th	v2 (v2022.01.01)
Feb 4, 2022	1.21% (0.01213)	40.54th	v2 (v2022.01.01)

Weaknesses (1)

CWE-79

Cross-site Scripting (XSS)

References (5)

http://secunia.com/advisories/35511
third-party-advisoryx_refsource_SECUNIA
http://www.securityfocus.com/archive/1/504516/100/0/threaded
mailing-listx_refsource_BUGTRAQ
http://www.securityfocus.com/bid/35480
vdb-entryx_refsource_BID
http://www.securitytracker.com/id?1022457
vdb-entryx_refsource_SECTRACK
http://www.vupen.com/english/advisories/2009/1713
vdb-entryx_refsource_VUPEN

Link	Providers	Tags
http://secunia.com/advisories/35511		third-party-advisoryx_refsource_SECUNIA
http://www.securityfocus.com/archive/1/504516/100/0/threaded		mailing-listx_refsource_BUGTRAQ
http://www.securityfocus.com/bid/35480		vdb-entryx_refsource_BID
http://www.securitytracker.com/id?1022457		vdb-entryx_refsource_SECTRACK
http://www.vupen.com/english/advisories/2009/1713		vdb-entryx_refsource_VUPEN

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Jun 25, 2009

Updated Aug 7, 2024

Reserved Mar 31, 2009

Link CVE-2009-1202

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2009-1202

Red Hat

Severity n/a

Public date n/a

Links CVE-2009-1202