high Known exploitedREV. 01

CVE-2008-4128Cisco IOS 12.4 web admin — request forgery to privileged commands

The web administration interface of Cisco's router software (IOS) 12.4 on the 871 router does not tie a request to the session that made it, so a page an administrator visits can silently issue privileged commands to the router.

YOUR NEXT MOVE

Shut down the IOS web administration server or restrict it to a management network; move off end-of-life 12.4 releases, which receive no fixes.

Read the risk

THE VITAL STATS
CVSS score
4.3/ 10
CVSS v3.1
EPSS probability
34%
Likelihood of exploitation
Attack complexity
Low
Conditions needed to exploit
Known exploited
Yes — CISA KEV
CVE published
2008-09-18
Added to KEV
2026-07-13
Exploit published
Yes
Confidence
high
Kill chain
initial access
MITRE ATT&CK
T1189
Severity
high

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Attacker needsA signed-in administrator must visit an attacker-controlled page while the router's web admin interface is reachable.

Behind the card

5 REFERENCES
Field-level provenanceTRACE THE SOURCES +

Which source supports each field, when it was retrieved, and who extracted it.

FieldsSourceRetrievedExtractorConfidence
cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_atnvd.nist.gov2026-09-23scrty-crds-pipeline/0.1high
exploitation.known_exploited, exploitation.kev_addedcisa.gov2026-09-23scrty-crds-pipeline/0.1high
epssapi.first.org2026-09-23scrty-crds-pipeline/0.1high
title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisitesnvd.nist.gov2026-09-23claude-codehigh

Printing history

THE RECORD
  1. r1Initial base card

First printing. This card has not been reprinted since publication.

crds:cve-2008-4128 · CRDS 0.1 · Issued 2026-09-23