CISA KEV catalog
Confirmed active exploitation.
Listed in CISA's catalog of Known Exploited Vulnerabilities: attackers are using it in real attacks. Patch it with priority.
- Name
- Cisco IOS and XE Software Internet Key Exchange Memory Leak Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
Description
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a memory leak or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device to be processed. A successful exploit could cause an affected device to continuously consume memory and eventually reload, resulting in a DoS condition. Cisco Bug IDs: CSCvf22394.
Affected products
cisco: ios; cisco: asr 1001-hx; cisco: asr 1001-x; cisco: asr 1002-hx; cisco: asr 1002-x; cisco: asr 1004; cisco: asr 1006; cisco: asr 1006-x; cisco: asr 1009-x; cisco: asr 1013; cisco: ios xe; rockwellautomation: allen-bradley stratix 5900
References10
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/c… Vendor Advisory
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/c… Vendor Advisory
- www.securityfocus.com/bid/103566 Broken LinkThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1040595 Broken LinkThird Party AdvisoryVDB Entry
- ics-cert.us-cert.gov/advisories/ICSA-18-107-03 Third Party AdvisoryUS Government ResourceVDB Entry
- ics-cert.us-cert.gov/advisories/ICSA-18-107-04 Third Party AdvisoryUS Government ResourceVDB Entry
- www.securityfocus.com/bid/103566 Broken LinkThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1040595 Broken LinkThird Party AdvisoryVDB Entry
- ics-cert.us-cert.gov/advisories/ICSA-18-107-03 Third Party AdvisoryUS Government ResourceVDB Entry
- ics-cert.us-cert.gov/advisories/ICSA-18-107-04 Third Party AdvisoryUS Government ResourceVDB Entry
Metrics
- CVSS 3.1
-
8.6
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H - EPSS — exploit probability
- 7% percentile: 94 · as of 10 November 2026
- CWE
- CWE-20CWE-401
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