CVE-2012-5032: n/a vulnerability

CVE-2012-5032: The Flex-VPN load-balancing feature in the ipsec-ikev2 implementation in Cisco IOS before 15.1(1)SY3 does n...

The Flex-VPN load-balancing feature in the ipsec-ikev2 implementation in Cisco IOS before 15.1(1)SY3 does not require authentication, which allows remote attackers to trigger the forwarding of VPN traffic to an attacker-controlled destination, or the discarding of this traffic, by arranging for an arbitrary device to become a cluster member, aka Bug ID CSCub93641.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 20:50 UTC (UTC+00:00)

Security readout for executives and security teams

This flaw affects Cisco IOS Flex-VPN load balancing before 15.1(1)SY3. Because cluster membership was not authenticated, a remote attacker could potentially redirect VPN traffic to a destination they control or cause that traffic to be discarded. Exposure appears limited to Cisco IOS deployments before 15.1(1)SY3 that use the Flex-VPN load-balancing feature. The source bundle does not provide complete CPEs, platforms, or configuration prerequisites beyond that feature and version boundary. Treat this as a targeted network-infrastructure risk if Flex-VPN load balancing is in use. The business concern is loss or exposure of VPN traffic, but urgency depends on whether affected Cisco IOS versions remain deployed. Mitigation focus: Check Cisco guidance and release notes for Bug ID CSCub93641.; Upgrade affected Cisco IOS deployments to 15.1(1)SY3 or a later fixed release.; Inventory Flex-VPN load-balancing use across Cisco IOS devices..

Prepared: Jun 14, 2026, 14:32 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Apr 23, 2014, 10:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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1Source links

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CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

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