CVE-2025-5777

HIGHNVD 7.59.0▲Trending — 4 sources updated this weekExploited in the wild

7.5

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

CVSS v3: 7.5
EG Score: 9.0(high)
EPSS: 98.7%
KEV: ⚠ Exploited

Published

June 17, 2025

Last Modified

October 30, 2025

References (10)

secure@citrixhttps://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420
af854a3a-2127-422b-91ae-364da2661108https://citrixbleed.com
af854a3a-2127-422b-91ae-364da2661108https://horizon3.ai/attack-research/attack-blogs/cve-2025-5777-citrixbleed-2-write-up-maybe/
af854a3a-2127-422b-91ae-364da2661108https://labs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777/
af854a3a-2127-422b-91ae-364da2661108https://www.bleepingcomputer.com/news/security/cisa-tags-citrix-bleed-2-as-exploited-gives-agencies-a-day-to-patch/
af854a3a-2127-422b-91ae-364da2661108https://www.netscaler.com/blog/news/netscaler-critical-security-updates-for-cve-2025-6543-and-cve-2025-5777/
af854a3a-2127-422b-91ae-364da2661108https://www.theregister.com/2025/07/10/cisa_citrixbleed_kev/
134c704f-9b21-4f2e-91b3-4a467353bcc0https://doublepulsar.com/citrixbleed-2-exploitation-started-mid-june-how-to-spot-it-f3106392aa71
134c704f-9b21-4f2e-91b3-4a467353bcc0https://reliaquest.com/blog/threat-spotlight-citrix-bleed-2-vulnerability-in-netscaler-adc-gateway-devices/
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-5777

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-03 21:25 UTCEG score recompute
2026-06-03 21:25 UTCGHSA enrichment
2026-06-03 19:09 UTCkev_newly_listed
2026-06-03 17:18 UTCEG score recompute
2026-06-03 17:18 UTCGHSA enrichment
2026-06-03 13:11 UTCEG score recompute
2026-06-03 13:11 UTCGHSA enrichment
2026-06-03 09:04 UTCEG score recompute
2026-06-03 09:04 UTCGHSA enrichment
2026-06-03 04:57 UTCEG score recompute
2026-06-03 04:57 UTCGHSA enrichment
2026-06-03 00:50 UTCEG score recompute
2026-06-03 00:50 UTCGHSA enrichment
2026-06-02 20:43 UTCEG score recompute
2026-06-02 20:43 UTCGHSA enrichment
2026-06-02 20:13 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-02 18:32 UTCkev_newly_listed
2026-06-02 16:36 UTCEG score recompute
2026-06-02 16:36 UTCGHSA enrichment

Publicly available exploits

(10 references)

Working exploit code is in the public domain (9 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCndr-repo/CVE-2025-5777
First seen Aug 20, 2025
Exploit for CVE-2025-5777: Citrix NetScaler Memory Disclosure (CitrixBleed 2)
Open source ↗
Exploit-DBEDB-52401
First seen Aug 11, 2025
Citrix NetScaler ADC/Gateway 14.1 - Memory Disclosure
Open source ↗
GitHub PoCsoltanali0/CVE-2025-5777-Exploit
First seen Aug 7, 2025
Open source ↗
GitHub PoCShivshantp/CVE-2025-5777-TrendMicro-ApexCentral-RCE
First seen Jul 23, 2025
PoC for CVE-2025-5777 – Auth Bypass and RCE in Trend Micro Apex Central
Open source ↗
GitHub PoCcyberleelawat/ExploitVeer
First seen Jul 15, 2025
An advanced, powerful, and easy-to-use tool designed to detect and exploit CVE-2025-5777 (CitrixBleed 2). This script not only identifies the vulnerability but also helps in demonstrating its impact by parsing human-readable information from the memory leak.
Open source ↗
GitHub PoCbughuntar/CVE-2025-5777
First seen Jul 10, 2025
CVE-2025-5777 Citrix NetScaler Memory Leak Exploit (CitrixBleed 2)
Open source ↗
GitHub PoCwin3zz/CVE-2025-5777
First seen Jul 8, 2025
CVE-2025-5777 (CitrixBleed 2) - Critical memory leak vulnerability affecting Citrix NetScaler ADC and Gateway devices
Open source ↗
GitHub PoCChocapikk/CVE-2025-5777
First seen Jul 8, 2025
CitrixBleed 2 (CVE-2025-5777)
Open source ↗
GitHub PoCorange0Mint/CitrixBleed-2-CVE-2025-5777
First seen Jul 6, 2025
CitrixBleed-2 Checker & Poc automatic exploit and check token.
Open source ↗
GitHub PoCnocerainfosec/cve-2025-5777
First seen Jul 5, 2025
Memory disclosure vulnerability in Citrix NetScaler ADC and Gateway when configured as a Gateway (VPN virtual server, ICA proxy, CVPN, RDP Proxy).
Open source ↗

Frequently asked(6)

What is CVE-2025-5777?

CVE-2025-5777 is a high vulnerability published on June 17, 2025. 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

When was CVE-2025-5777 disclosed?

CVE-2025-5777 was first published in the National Vulnerability Database on June 17, 2025, with the most recent update on October 30, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-5777 actively exploited?

Yes. CISA added CVE-2025-5777 to the Known Exploited Vulnerabilities catalog on July 10, 2025, affecting Citrix NetScaler ADC and Gateway. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2025-5777?

CVE-2025-5777 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.

Which products are affected by CVE-2025-5777?

CVE-2025-5777 affects Citrix NetScaler ADC and Gateway. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2025-5777?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-5777, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-5777

Explore →

Is Your Infrastructure Affected by CVE-2025-5777?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2025-5777

📅 Published

🔄 Last Modified

🔗 References (10)

Weakness Classification(3)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-5777?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (10)

Frequently asked(6)

Related CVEs(same CWE)