CVE-2008-1153

Exp

Cisco IOS 12.1, 12.2, 12.3, and 12.4, with IPv4 UDP services and the IPv6 protocol enabled, allows remote attackers to cause a denial of service (device crash and possible blocked interface) via a crafted IPv6 packet to the device.

Published: 2008-03-27 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-1153 is rated High Exploit Risk (78.1/100): CVSS High severity, with high exploitation likelihood (EPSS 5.58%, 92th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.60% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2008-1153

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2008-1153

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.99% 5.58% +2.60%
2 2025-11-26 3.45% 2.99% -0.47%
3 2025-10-19 — 3.45% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-1153

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 2.0 HIGH
AV:N/AC:M/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 6.9 [email protected]

Weakness enumeration for CVE-2008-1153

Affected software / configurations for CVE-2008-1153

Vendor Product Version Raw CPE
cisco cisco_ios 12.3 cpe:2.3:o:cisco:cisco_ios:12.3:*:*:*:*:*:*:*
cisco cisco_ios 12.4 cpe:2.3:o:cisco:cisco_ios:12.4:*:*:*:*:*:*:*
cisco ios 12.1 cpe:2.3:o:cisco:ios:12.1:*:*:*:*:*:*:*
cisco ios 12.2 cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*

References for CVE-2008-1153

cvelogic Threat Intelligence