Cyber Threat Intelligence
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MEDIUM · CVSS 4.3 CISA Known Exploited Vulnerability

CVE-2008-4128

Cisco IOS Cross-Site Request Forgery Vulnerability

Cisco IOS

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" command to the /level/15/exec/- URI, and (2) a certain "alias exec" command to the /level/15/exec/-/configure/http URI. NOTE: some of these details are obtained from third party information.

CVSS
4.3
MEDIUM
EPSS
33%
30-day exploitation
Ransomware groups
0
recorded exploiting
Published
18 Sep 2008
CWE-352

Exploitation status

CISA Known Exploited Vulnerabilities

Listed by CISA on 13 July 2026. US federal agencies were required to remediate it by 16 July 2026.

EPSS — exploitation probability

FIRST puts the probability of exploitation activity in the next 30 days at 33%, which is higher than 98.2% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.

CVSS vector

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

Frequently asked questions

Is CVE-2008-4128 being exploited by ransomware groups?

No ransomware group in this database is currently recorded as exploiting CVE-2008-4128.

What does CVE-2008-4128 affect?

CVE-2008-4128 affects Cisco IOS. 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" command to the /level/15/exec/- URI, and (2) a certain "alias exec" command to the /level/15/exec/-/configure/http URI. NOTE: some of these details are obtained from third party information.

How severe is CVE-2008-4128?

CVE-2008-4128 is rated MEDIUM with a CVSS base score of 4.3. EPSS puts the probability of exploitation in the next 30 days at 33%, higher than 98.2% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 16 July 2026.

How should organisations respond to CVE-2008-4128?

Apply the vendor patch for Cisco IOS as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.