CVE-2014-7997

Severity: medium (CVSS 6.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-11-15 · updated 2026-06-17
Weakness: CWE-399

Description

The DHCP implementation in Cisco IOS on Aironet access points does not properly handle error conditions with short leases and unsuccessful lease-renewal attempts, which allows remote attackers to cause a denial of service (device restart) by triggering a transition into a recovery state that was intended to involve a network-interface restart but actually involves a full device restart, aka Bug ID CSCtn16281.

Affected products

Cisco IOS: all versions

References

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-7997
http://www.securitytracker.com/id/1031218
https://exchange.xforce.ibmcloud.com/vulnerabilities/98691
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-7997
http://www.securitytracker.com/id/1031218
https://exchange.xforce.ibmcloud.com/vulnerabilities/98691

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