# CVE-2025-5777

## Summary

- **CVE ID:** CVE-2025-5777
- **Severity:** CRITICAL
- **CVSS Score:** 9.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L)
- **CWE:** CWE-125
- **Published:** Jun 17, 2025
- **Last Modified:** Aug 4, 2026

## Description

Insufficient input validation leading to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server

## Affected Products

- NetScaler — ADC (14.1)
- NetScaler — ADC (13.1)
- NetScaler — Gateway (14.1)
- NetScaler — Gateway (13.1)

## References

- [CNA](https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420)
- [CISA-ADP](https://doublepulsar.com/citrixbleed-2-exploitation-started-mid-june-how-to-spot-it-f3106392aa71)
- [CISA-ADP](https://reliaquest.com/blog/threat-spotlight-citrix-bleed-2-vulnerability-in-netscaler-adc-gateway-devices/)
- [CISA-ADP](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-5777)
- [CVE](https://www.bleepingcomputer.com/news/security/cisa-tags-citrix-bleed-2-as-exploited-gives-agencies-a-day-to-patch/)
- [CVE](https://labs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777/)
- [CVE](https://www.theregister.com/2025/07/10/cisa_citrixbleed_kev/)
- [CVE](https://horizon3.ai/attack-research/attack-blogs/cve-2025-5777-citrixbleed-2-write-up-maybe/)
- [CVE](https://www.netscaler.com/blog/news/netscaler-critical-security-updates-for-cve-2025-6543-and-cve-2025-5777/)
- [CVE](https://citrixbleed.com)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 99.95%
- **EPSS Percentile:** 100.0

## Known Exploited Vulnerabilities (KEV)

- **Date Added:** Jul 10, 2025
- **Due Date:** Jul 11, 2025

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-09._