CVE-2025-5777
Actively exploited. CVE-2025-5777 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-07-10) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2025-5777 is indexed in Exploit-DB, GitHub PoC and Nuclei. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
[Update on July 17, 2025] The vendor has published a link containing a method for assessing attempts to exploit in application and system logs [12]. [Update on July 7, 2025] On June 17, 2025, Citrix released a security bulletin...
CSIRTS triage
- What
- Multiple vulnerabilities have been identified.
- Who is affected
- Users of Citrix NetScaler ADC and NetScaler Gateway.
- Urgency
- Remediation is urgent as exploitation attempts have been detected.
- Action
- Refer to the security bulletin for mitigation methods.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2025-5777 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- Exploit-DBA public exploit is published in the Exploit-DB archive.look it up ↗
- GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗
- NucleiA nuclei-templates detection/PoC template exists for this CVE.look it up ↗
Advisory coverage (2)
- criticalexploitedCVE-2025-5777: Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerabilitycisa-kev · 2025-07-10
- unknownMultiple vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway (July 1, 2025)cert-fr-alerte · 2025-07-01
External references
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[](https://www.csirts.com/cve/CVE-2025-5777)