CVE-2008-4128
Cisco IOS Cross-Site Request Forgery Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 16 July 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
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 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- EPSS
- 33.87% probability · 98th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 17 September 2008
- CISA KEV
- Listed 13 July 2026 · due 16 July 2026
- Weakness
- CWE-352
- Affected
- cisco/ios
- Source
- cve@mitre.org
EPSS 33.9% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. https://www.cisco.com/c/en/us/obsolete/ios-nx-os-software/cisco-ios-software-releases-12-4-mainline.html ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2008-4128
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://jbrownsec.blogspot.com/2008/09/cisco-0day-released.htmlBroken Link
- http://www.securityfocus.com/bid/31218Exploit, Third Party Advisory, VDB Entry
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45226Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/6476Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/6477Exploit, Third Party Advisory, VDB Entry
- http://jbrownsec.blogspot.com/2008/09/cisco-0day-released.htmlBroken Link
- http://www.securityfocus.com/bid/31218Exploit, Third Party Advisory, VDB Entry
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45226Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/6476Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/6477Exploit, Third Party Advisory, VDB Entry
- https://media.defense.gov/2026/Jul/09/2003959498/-1/-1/1/CSA_IMPROVE_ROUTER_HYGIENE.PDFThird Party Advisory, US Government Resource
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2008-4128US Government Resource
- https://www.cisco.com/c/en/us/obsolete/ios-nx-os-software/cisco-ios-software-releases-12-4-mainline.htmlProduct
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.