CVE-2012-3924 — The SSLVPN implementation in Cisco IOS 15.1 and 15.2, when DTLS is enabled, does not properly handle certain outbound ACL configurations, which allows remote authenticated users to cause a denial of service (device crash) via a session involving a PPP over ATM (PPPoA) interface, aka Bug ID CSCty97961

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LOW

The SSLVPN implementation in Cisco IOS 15.1 and 15.2, when DTLS is enabled, does not properly handle certain outbound ACL configurations, which allows remote authenticated users to cause a denial of service (device crash) via a session involving a PPP over ATM (PPPoA) interface, aka Bug ID CSCty97961

Published Sep 16, 2012

3.5

LOW

CVSS 2.0

EPSS 0.86%

Description

The SSLVPN implementation in Cisco IOS 15.1 and 15.2, when DTLS is enabled, does not properly handle certain outbound ACL configurations, which allows remote authenticated users to cause a denial of service (device crash) via a session involving a PPP over ATM (PPPoA) interface, aka Bug ID CSCty97961.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.86% 0.00856

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

EPSS probability 0.00856

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	0.86% (0.00856)	56.87th	v5 (v2026.06.15)
Jun 15, 2026	0.86% (0.00856)	53.45th	v5 (v2026.06.15)
Mar 17, 2025	0.38% (0.00377)	57.17th	v4 (v2025.03.14)
Dec 12, 2024	0.11% (0.00108)	45.32th	v3 (v2023.03.01)
Jun 27, 2024	0.11% (0.00108)	43.97th	v3 (v2023.03.01)
Mar 7, 2023	0.11% (0.00108)	41.97th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Sep 17, 2022	1.05% (0.01055)	50.47th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (2)

http://www.cisco.com/en/US/docs/ios/15_2m_and_t/release/notes/152-1TCAVS.html
x_refsource_CONFIRMVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/78672
vdb-entryx_refsource_XF

Link	Providers	Tags
http://www.cisco.com/en/US/docs/ios/15_2m_and_t/release/notes/152-1TCAVS.html		x_refsource_CONFIRMVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/78672		vdb-entryx_refsource_XF

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Sep 16, 2012

Updated Aug 6, 2024

Reserved Jul 10, 2012

Link CVE-2012-3924

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2012-3924

Red Hat

Severity n/a

Public date n/a

Links CVE-2012-3924