CVE-2025-5777

highKEV · exploitedEPSS 1.000 · 100 %ileexploit · PoCDEEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 27 exploits · PoC

Likely / severe?

100.0% (100th) EPSS

CVSS 7.5 · high

Is it mine?

31 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

added 2025-07-10remediate by 2025-07-11

required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

EPSS · scored 2026-10-19

Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability

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

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–10

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.110criticalAV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v4.09.3criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:Lsecondary · ENISA EU

v4.09.3criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · secure@citrix.com

v4.09.3criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-908USprimaryCWE-125USCWE-125US

ATT&CK techniques

ATT&CK techniques this enables or maps to.

exploits (27)

Public proof-of-concept and weaponised exploit code.

EDB-52401Citrix NetScaler ADC/Gateway 14.1 - Memory DisclosurePoC · exploit_db
0xBlackash/CVE-2025-5777CVE-2025-5777PoC · poc_in_github
0xgh057r3c0n/CVE-2025-5777Citrix NetScaler Memory Leak PoCPoC · poc_in_github
Chocapikk/CVE-2025-5777CitrixBleed 2 (CVE-2025-5777)PoC · poc_in_github
FrenzisRed/CVE-2025-5777CitrixBleed2 powershell versionPoC · poc_in_github
RaR1991/citrix_bleed_2Citrix Bleed 2 PoC Scanner (CVE-2025-5777)PoC · poc_in_github

affected products (31)

Products and version ranges known to be affected.

Citrix Systems ADC <12.1-55.328-FIPSall versionscert_bundDE
Citrix Systems ADC <13.1-37.235-FIPSall versionscert_bundDE
Citrix Systems ADC <13.1-37.235-NDcPPall versionscert_bundDE
Citrix Systems ADC <13.1-58.32all versionscert_bundDE
Citrix Systems ADC <14.1-43.56all versionscert_bundDE
Citrix Systems NetScaler Gateway <13.1-58.32all versionscert_bundDE
Citrix Systems NetScaler Gateway <14.1-43.56all versionscert_bundDE
Citrix Systems ADC< 12.1-55.328-FIPScert_bundDE
Citrix Systems ADC< 13.1-37.235-FIPScert_bundDE
Citrix Systems ADC< 13.1-37.235-NDcPPcert_bundDE
Citrix Systems ADC< 13.1-58.32cert_bundDE
Citrix Systems ADC< 14.1-43.56cert_bundDE
Citrix Systems NetScaler≤ Gateway <13.1-58.32cert_bundDE
Citrix Systems NetScaler≤ Gateway <14.1-43.56cert_bundDE
NetScaler ADC13.1 → 58.32enisa_euvdEU
NetScaler ADC14.1 → 43.56enisa_euvdEU
NetScaler Gateway13.1 → 58.32enisa_euvdEU
NetScaler Gateway14.1 → 43.56enisa_euvdEU
Citrix Systems Inc. NetScaler Application Delivery Controller12.1-FIPS → 12.1-55.328-FIPSfstec_bduRU
Citrix Systems Inc. NetScaler Application Delivery Controller13.1 → 13.1-58.32fstec_bduRU

showing 20 of 31

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-1349Citrix Systems ADC: Mehrere SchwachstellenDeutsch2025-06-17csaf · cert_bundDE
Ein Angreifer aus einem angrenzenden Netzwerk kann mehrere Schwachstellen in Citrix Systems ADC und Citrix Systems NetScaler ausnutzen, um Sicherheitsvorkehrungen zu umgehen, oder um einen Denial-of-Service auszulösen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2025-06-17modified 2026-10-08

related (1,045)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-112897US	—	—	—	—
CVE-2026-109438US	medium	—	—	—
CVE-2026-97629US	medium	—	—	—
CVE-2026-104086US	medium	—	—	—
CVE-2026-97011US	high	—	—	—

+1040 more

references (14)

External citations — patches, advisories, analysis.

scry

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