CVE-2005-1517 — Unknown vulnerability in Cisco Firewall Services Module (FWSM) 2.3.1 and earlier, when using URL, FTP, or HTTPS filtering exceptions, allows certain TCP packets to bypass access control lists (ACLs)

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HIGH

Unknown vulnerability in Cisco Firewall Services Module (FWSM) 2.3.1 and earlier, when using URL, FTP, or HTTPS filtering exceptions, allows certain TCP packets to bypass access control lists (ACLs)

Published May 11, 2005

7.5

HIGH

CVSS 2.0

EPSS 1.20%

Description

Unknown vulnerability in Cisco Firewall Services Module (FWSM) 2.3.1 and earlier, when using URL, FTP, or HTTPS filtering exceptions, allows certain TCP packets to bypass access control lists (ACLs).

Affected products

Remediation

No remediation recorded yet.

Metrics

1.20% 0.01202

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.01202

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 2, 2026	1.20% (0.01202)	67.16th	v5 (v2026.06.15)
Jun 15, 2026	1.20% (0.01202)	64.11th	v5 (v2026.06.15)
Mar 17, 2025	0.39% (0.00394)	58.22th	v4 (v2025.03.14)
Dec 12, 2024	0.22% (0.00219)	60.81th	v3 (v2023.03.01)
Aug 31, 2023	0.22% (0.00220)	59.26th	v3 (v2023.03.01)
Mar 7, 2023	0.44% (0.00443)	70.91th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Sep 10, 2022	0.89% (0.00885)	26.24th	v2 (v2022.01.01)
Apr 1, 2022	0.89% (0.00885)	24.24th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (2)

http://www.cisco.com/warp/public/707/cisco-sa-20050511-url.shtml
vendor-advisoryx_refsource_CISCO
http://www.vupen.com/english/advisories/2005/0527
vdb-entryx_refsource_VUPEN

Link	Providers	Tags
http://www.cisco.com/warp/public/707/cisco-sa-20050511-url.shtml		vendor-advisoryx_refsource_CISCO
http://www.vupen.com/english/advisories/2005/0527		vdb-entryx_refsource_VUPEN

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published May 11, 2005

Updated Aug 7, 2024

Reserved May 11, 2005

Link CVE-2005-1517

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2005-1517

Red Hat

Severity n/a

Public date n/a

Links CVE-2005-1517