Page generated: 08 Nov 2026, 09:34 UTC
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CVE-2025-5777

Citrix Bleed 2

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 9.3 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.9/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.3: +1.40
  • Fresh EPSS: 99.97%: +0.50

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 39 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

https://tech-insider.org/
Press · 09 Aug 2026, 07:00 · Citrix NetScaler Flaw CVE-2026-8451: 24-Hour Exploit - https://tech-insider.org/
The Hacker News
Press · 13 Jul 2026, 07:00 · ⚡ Weekly Recap: ShareFile Threat, Citrix Bleed 2 Ransomware, AI Coding Attacks, and More - The Hacker News
CyberSecurityNews
Press · 10 Jul 2026, 07:00 · Hackers Can Go From CitrixBleed 2 Exploitation to Ransomware in Under an Hour - CyberSecurityNews
IT Security Guru
Press · 09 Jul 2026, 07:00 · CitrixBleed 2 exploited in repeatable attack chain culminating in DragonForce ransomware, researchers find - IT Security Guru
https://tech-insider.org/
Press · 05 Jul 2026, 07:00 · New CitrixBleed Flaw: NetScaler Hit in 24 Hours [2026] - https://tech-insider.org/
See all 39 source documents
CSO Online
Press · 03 Jul 2026, 07:00 · New CitrixBleed-like NetScaler flaw sees exploit attempts in the wild - CSO Online
CyberSecurityNews
Press · 02 Jul 2026, 07:00 · CitrixBleed Vulnerability Exploited by Hackers Within 24 Hours of Public Disclosure - CyberSecurityNews
SecurityWeek
Press · 02 Jul 2026, 07:00 · New CitrixBleed Vulnerability Exploited Immediately After Public Disclosure - SecurityWeek
The Hacker News
Press · 02 Jul 2026, 07:00 · Ransomware Groups Turn to Citrix Bleed 2, BYOVD, and Supply Chain Credentials - The Hacker News
Techzine Global
Press · 01 Jul 2026, 07:00 · Anubis ransomware exploits CitrixBleed 2 and RMM tools - Techzine Global
watchTowr Labs
Press · 30 Jun 2026, 19:35 · CitrixBleed To Infinity And Beyond (Citrix NetScaler Pre-Auth Memory Overread CVE-2026-8451)
watchTowr Labs
Press · 30 Jun 2026, 07:00 · CitrixBleed To Infinity And Beyond (Citrix NetScaler Pre-Auth Memory Overread CVE-2026-8451) - watchTowr Labs
Arctic Wolf
Press · 30 Jun 2026, 07:00 · From CitrixBleed 2 to Cloudflared: The Tools and Techniques Behind Anubis Ransomware Attacks - Arctic Wolf
watchTowr
Press · 29 Mar 2026, 07:00 · Please, We Beg, Just One Weekend Free Of Appliances (Citrix NetScaler CVE-2026-3055 Memory Overread Part 2) - watchTowr
The Hacker News
Press · 24 Mar 2026, 07:00 · Citrix Urges Patching Critical NetScaler Flaw Allowing Unauthenticated Data Leaks - The Hacker News
CyberSecurityNews
Press · 12 Dec 2025, 08:00 · Top 20 Most Exploited Vulnerabilities of 2025: A Comprehensive Analysis - CyberSecurityNews
SecurityWeek
Press · 13 Nov 2025, 08:00 · Cisco ISE, CitrixBleed 2 Vulnerabilities Exploited as Zero-Days: Amazon - SecurityWeek
watchTowr Labs
Press · 12 Nov 2025, 08:00 · Is It CitrixBleed4? Well, No. Is It Good? Also, No. (Citrix NetScaler Memory Leak & RXSS CVE-2025-12101) - watchTowr Labs
Amazon Web Services (AWS)
Press · 12 Nov 2025, 08:00 · Amazon discovers APT exploiting Cisco and Citrix zero-days - Amazon Web Services (AWS)
The Hacker News
Press · 12 Nov 2025, 08:00 · Amazon Uncovers Attacks Exploited Cisco ISE and Citrix NetScaler as Zero-Day Flaws - The Hacker News
BleepingComputer
Press · 12 Nov 2025, 08:00 · Hackers exploited Citrix, Cisco ISE flaws in zero-day attacks - BleepingComputer
DoublePulsar
Press · 28 Aug 2025, 07:00 · Citrix forgot to tell you CVE-2025–6543 has been used as a zero day since May 2025 - DoublePulsar
SecurityWeek
Press · 18 Jul 2025, 07:00 · CitrixBleed 2: 100 Organizations Hacked, Thousands of Instances Still Vulnerable - SecurityWeek
Arctic Wolf
Press · 18 Jul 2025, 07:00 · Follow-Up: Updates on Actively Exploited Information Disclosure Vulnerability “Citrix Bleed 2” in Citrix NetScaler ADC and Gateway (CVE-2025-5777) - Arctic Wolf
Cyfirma
Press · 18 Jul 2025, 07:00 · CVE-2025-5777 – Pre-Auth Memory Leak in Citrix NetScaler (CitrixBleed 2) - Cyfirma
DoublePulsar
Press · 14 Jul 2025, 07:00 · CitrixBleed 2 situation update — everybody already got owned | by Kevin Beaumont - DoublePulsar
The Hacker News
Press · 11 Jul 2025, 07:00 · CISA Adds Citrix NetScaler CVE-2025-5777 to KEV Catalog as Active Exploits Target Enterprises - The Hacker News
The Record from Recorded Future News
Press · 11 Jul 2025, 07:00 · CISA orders agencies to immediately patch Citrix Bleed 2, saying bug poses ‘unacceptable risk’ - The Record from Recorded Future News
Akamai
Press · 10 Jul 2025, 07:00 · Mitigating CitrixBleed 2 (CVE‑2025‑5777) NetScaler Memory Disclosure with App & API Protector - Akamai
DoublePulsar
Press · 08 Jul 2025, 07:00 · CitrixBleed 2 exploitation started mid-June — how to spot it - DoublePulsar
BleepingComputer
Press · 07 Jul 2025, 07:00 · Public exploits released for Citrix Bleed 2 NetScaler flaw, patch now - BleepingComputer
wiz.io
Press · 06 Jul 2025, 07:00 · Critical vulnerabilities in NetScaler ADC exploited in-the-wild: everything you need to know - wiz.io
SOC Prime
Press · 04 Jul 2025, 07:00 · CVE-2025-5777 Detection: A New Critical Vulnerability Dubbed “CitrixBleed 2” in NetScaler ADC Faces Exploitation Risk - SOC Prime
watchTowr Labs
Press · 04 Jul 2025, 07:00 · How Much More Must We Bleed? - Citrix NetScaler Memory Disclosure (CitrixBleed 2 CVE-2025-5777) - watchTowr Labs
BleepingComputer
Press · 27 Jun 2025, 07:00 · Citrix Bleed 2 flaw now believed to be exploited in attacks - BleepingComputer
Cybersecurity Dive
Press · 27 Jun 2025, 07:00 · Hackers exploiting critical Citrix Netscaler flaw, researchers say - Cybersecurity Dive
Arctic Wolf
Press · 25 Jun 2025, 07:00 · CVE-2025-5777 - Arctic Wolf
The Hacker News
Press · 25 Jun 2025, 07:00 · Citrix Bleed 2 Flaw Enables Token Theft; SAP GUI Flaws Risk Sensitive Data Exposure - The Hacker News
DoublePulsar
Press · 24 Jun 2025, 07:00 · CitrixBleed 2: Electric Boogaloo — CVE-2025–5777 - DoublePulsar

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.9 (2026-11-02 15:14). The curve appears once the score changes.

Public exploit evidence

9

Public exploit entries / repo candidates

See 9 repos with metrics
RepositoryStarsForksLanguageUpdated
mingshenhk/CitrixBleed-2-CVE-2025-5777-PoC-172Python30 Jun 2025, 11:11
Shivshantp/CVE-2025-5777-TrendMicro-ApexCentral-RCE40Python23 Jul 2025, 16:04
orange0Mint/CitrixBleed-2-CVE-2025-577720Python06 Jul 2025, 16:59
0xgh057r3c0n/CVE-2025-577702Python10 Jul 2025, 19:56
idobarel/CVE-2025-577700Python06 Jul 2025, 19:41
nicecopy/POC-CVE-2025-577700Python18 Aug 2025, 23:46
RaR1991/citrix_bleed_200Python06 Jul 2025, 10:56
rootxsushant/Citrix-NetScaler-Memory-Leak-CVE-2025-577701Python11 Aug 2025, 15:53
Sheep-Hunter/CVE-2025-5777-POC00Python20 Aug 2025, 09:24
Public exploit evidence
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 9.3; EPSS 100.0%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:59:42.332197+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
17 Jun 2025, 12:29
First press mention
24 Jun 2025, 07:00
Added to the CISA KEV catalog
10 Jul 2025, 00:00
Latest press mention
09 Aug 2026, 07:00
Score calculated
05 Nov 2026, 13:59
Name
Citrix Bleed 2
PoCs on GitHub
9 repositories