CVE-2012-4098 — The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13055

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MEDIUM

The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13055

Published Oct 5, 2013

5.0

MEDIUM

CVSS 2.0

EPSS 2.40%

Description

The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13055.

Affected products

Remediation

No remediation recorded yet.

Metrics

2.40% 0.02398

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

EPSS probability 0.02398

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	2.40% (0.02398)	83.41th	v5 (v2026.06.15)
Jun 15, 2026	2.40% (0.02398)	81.79th	v5 (v2026.06.15)
Mar 17, 2025	0.53% (0.00535)	65.42th	v4 (v2025.03.14)
Dec 12, 2024	0.56% (0.00563)	78.47th	v3 (v2023.03.01)
Feb 8, 2024	0.56% (0.00563)	77.04th	v3 (v2023.03.01)
Mar 7, 2023	0.56% (0.00563)	74.33th	v3 (v2023.03.01)
Mar 6, 2023	1.14% (0.01136)	59.45th	v2 (v2022.01.01)
Oct 18, 2022	1.14% (0.01136)	58.28th	v2 (v2022.01.01)
Apr 1, 2022	1.14% (0.01136)	56.27th	v2 (v2022.01.01)
Feb 4, 2022	1.14% (0.01136)	34.23th	v2 (v2022.01.01)

Weaknesses (1)

CWE-20

Improper Input Validation

References (3)

http://osvdb.org/98129
vdb-entryx_refsource_OSVDB
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2012-4098
vendor-advisoryx_refsource_CISCOVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/87675
vdb-entryx_refsource_XF

Link	Providers	Tags
http://osvdb.org/98129		vdb-entryx_refsource_OSVDB
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2012-4098		vendor-advisoryx_refsource_CISCOVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/87675		vdb-entryx_refsource_XF

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Oct 5, 2013

Updated Aug 6, 2024

Reserved Jul 31, 2012

Link CVE-2012-4098

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2012-4098

Red Hat

Severity n/a

Public date n/a

Links CVE-2012-4098