CVE-2008-4128
n/a n/a
Summary
Multiple cross-site request forgery (CSRF) vulnerabilities in the HTTP Administration component in Cisco IOS 12.4 on the 871 Integrated Services Router allow remote attackers to execute arbitrary commands via (1) a certain "show privilege"…
Published: 2008-09-18 · In KEV since: 2026-07-13
Analysis
🔴 Critical — actively exploited
Weakness: Cross-Site Request Forgery (CSRF) (CWE-352). Forces actions in the victim's session without consent.
How it's exploited: Exploitable over the network (internet-reachable), unauthenticated, if the victim interacts (open a file/click), and with low complexity.
Impact: Confidentiality high · Integrity high · Availability none.
Status: Active exploitation confirmed by CISA (KEV).
- Patch now: it is in CISA's actively-exploited catalog (KEV), with a deadline.
- Reduce exposure: keep it off the internet; firewall, VPN or network segmentation.
- Awareness: the attack needs victim interaction (phishing/file).
- Detect: turn this CVE into detection rules.
MITRE ATT&CK technique: T1190 · Exploit Public-Facing Application
Practice it in the arsenal: WAF Bypass
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
The vector encodes how it's exploited (translated above, in the analysis). Break it down in the CVSS tool →
Sources: CISA KEV · EPSS · FIRST.org · NVD. Analysis derived from the CVSS vector and exploitation status (no AI). Informational; always verify against the vendor's official advisory.