watchTowr-vs-Citrix-Netscaler-CVE-2026-88772

Detection Artifact Generator for Citrix NetScaler CVE-2026-88772

See our blog post for technical details.

Detection in Action

                     __         ___  ___________
         __  _  ______ _/  |__ ____ |  |_\__    ____\____  _  ________
         \ \/ \/ \__  \    ___/ ___\|  |  \|    | /  _ \ \/ \/ \_  __ \
          \     / / __ \|  | \  \___|   Y  |    |(  <_> \     / |  | \/
           \/\_/ (____  |__|  \___  |___|__|__  | \__  / \/\_/  |__|
                          \/          \/     \/

        watchTowr-vs-Citrix-Netscaler-CVE-2026-88772.py

        (*) Citrix Netscaler DTLS PreAuth buffer overflow to RCE Detection Artifact Generator

          - Sina Kheirkhah (@SinSinology) of watchTowr (@watchTowrcyber)

        CVEs: [CVE-2026-88772]

[*] building payload for '/tmp/watchTowr'
[+] content size: 7 bytes
[*] connecting to DTLS gateway...
[+] association ready: 3 server datagrams
[*] sending 120 records (176640 bytes)...
[*] done

offsets are hardcoded for version 14.1-73.30

Affected Versions

Refer to Citrix official advisory for a list of affected versions.

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