Cisco IOS Cross-Site Request Forgery Vulnerability

Cisco IOS

Cisco IOS 12.4 contains multiple cross-site forgery vulnerabilities that allows 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. Added to CISA KEV on 2026-07-13 (federal deadline 2026-07-16).

First seen: 13 Jul 2026
Last update: 13 Jul 2026, 12:00 UTC
Identifiers: CVE-2008-4128
Source: CISA KEV
On the menu as: Apple
VPN & firewalls

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Cisco IOS Cross-Site Request Forgery Vulnerability
Severity: high, exploited in the wild. Patch status: patched.
Affected: Cisco IOS
Ids: CVE-2008-4128

Cisco IOS 12.4 contains multiple cross-site forgery vulnerabilities that allows 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. Added to CISA KEV on 2026-07-13 (federal deadline 2026-07-16).

## Steps
1. This touches infrastructure (vpn-edge). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2008-4128") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://nvd.nist.gov/vuln/detail/CVE-2008-4128 https://www.cisco.com/c/en/us/obsolete/ios-nx-os-software/cisco-ios-software-releases-12-4-mainline.html
https://pwned.coffee/i/cisco-ios-cross-site-request-forgery-vulnerability-cve-2008-4128

Sources

Totalone hot coffee