synced 4 MIN AGO
01 Record

CVE-2009-0635

Memory leak in the Cisco Tunneling Control Protocol (cTCP) encapsulation feature in Cisco IOS 12.4, when an Easy VPN (aka EZVPN) server is enabled, allows remote attackers to cause a denial of service

UnratedPUBLISHEDCNA: cisco
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

Memory leak in the Cisco Tunneling Control Protocol (cTCP) encapsulation feature in Cisco IOS 12.4, when an Easy VPN (aka EZVPN) server is enabled, allows remote attackers to cause a denial of service

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
2.50% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 84.3% of scored records. A rank, not a probability.
NVD base score
The NVD has published no score for this record
NVD CVSS vector
No NVD score to derive
NVD analysis status
Modified. NVD last modified this record on 2026-06-16.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2009-03-27 16:00Z17 YR AGO
Last updated
2024-08-07 04:40Z2 YR AGO
Reserved
2009-02-18
Assigning CNA
cisco
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
00121324cd1be7bdcbf7c2624d417dd8f0283096a782147cb43d135dee23b21f

05 Affected products

VendorProductVersionsPlatforms
ciscoiosNot specified—

06 References