# CVE-2026-88773

HTTP request/response smuggling in Citrix NetScaler ADC/Gateway.

- Page: https://www.vulneraibility.com/cve/CVE-2026-88773
- CVSS: 9.3
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 3.08% (percentile 87.8)
- Public exploit code: 1 Metasploit module · 3 GitHub proofs of concept (first 2026-10-02)
- CISA SSVC: exploitation none, automatable yes, technical impact partial (assessed 2026-09-29)
- Weakness: CWE-444
- Published: 2026-09-27

## Affected versions

- Citrix NetScaler ADC: affected < 14.1-73.37; < 13.1-64.23; < 14.1-73.37 FIPS; < 13.1-37.279 and NDcPP
- Citrix NetScaler Gateway: affected < 14.1-73.37 FIPS; < 13.1-64.23

A version outside these ranges is not a statement that it is unaffected.

## Impact

Remote HTTP request/response smuggling enabling cache poisoning, request splitting, WAF bypass, session hijack and information disclosure of proxied services.

## Action

Immediate action required

## Recommendation

Apply Citrix updates to fixed versions (>=14.1-73.37/13.1-64.23) or implement mitigations per KB immediately.

## References

- [other] https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.