Paper/Archive/CVE-2025-5777

CVE-2025-5777

NetScaler ADC — NetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread

KEV · due 11 Jul ransomware use EPSS 100%public exploit SSVC act CVSS 9.3

CVSS 9.3 (CNA)9.3 / 10 × 3027.9 In CISA KEV+3030.0 EPSS percentile 100.01.000 × 2020.0 Exploit: SSVC active+1010.0 SSVC exploitation: active+1010.0

Description · from the CVE record

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

ProductAffectedFixed inSource

ADC14.1 – < 43.5643.56CNA

ADC13.1 – < 58.3258.32CNA

Gateway14.1 – < 43.5643.56CNA

Gateway13.1 – < 58.3258.32CNA

Scores by source

Citrix (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

refsupport.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420 writeupdoublepulsar.com/citrixbleed-2-exploitation-started-mid-june-how-to-spot-it-f3106392aa71 refreliaquest.com/blog/threat-spotlight-citrix-bleed-2-vulnerability-in-netscaler-adc-gateway-devices refcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-5777 refbleepingcomputer.com/news/security/cisa-tags-citrix-bleed-2-as-exploited-gives-agencies-a-day-to-patch reflabs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777 reftheregister.com/2025/07/10/cisa_citrixbleed_kev refhorizon3.ai/attack-research/attack-blogs/cve-2025-5777-citrixbleed-2-write-up-maybe refnetscaler.com/blog/news/netscaler-critical-security-updates-for-cve-2025-6543-and-cve-2025-5777 refcitrixbleed.com kevcisa.gov/known-exploited-vulnerabilities-catalog