CVE-2026-8655

criticalpriority · track · 39EPSS 0.006 · 50 %ileDEEUNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.63% (50th) EPSS

CVSS 9.8 · critical

Is it mine?

28 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-26

Multiple Memory overflow vulnerabilities in NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if NetScaler ADC is configured as an LB of type Oracle OR NetScaler ADC is configured as a DNS Proxy OR NetScaler ADC is configured as a DNS recursive resolver deployment

cvss

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

9.9

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.8–9.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.9criticalAV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · NCSC-NL NL

v4.08.8highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:Lsecondary · ENISA EU

v4.08.8highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/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

v4.06.8mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:L/E:U/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: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USCWE-119US

affected products (28)

Products and version ranges known to be affected.

Citrix Systems NetScaler≤ ADC <13.1-63.18cert_bundDE
Citrix Systems NetScaler≤ ADC <13.1-FIPS 13.1.37.272cert_bundDE
Citrix Systems NetScaler≤ ADC <13.1-NDcPP 13.1.37.272cert_bundDE
Citrix Systems NetScaler≤ ADC <14.1-72.61cert_bundDE
Citrix Systems NetScaler≤ ADC <14.1-72.61 FIPScert_bundDE
Citrix Systems NetScaler≤ Gateway <13.1-63.18cert_bundDE
Citrix Systems NetScaler≤ Gateway <14.1-72.61cert_bundDE
NetScaler ADC13.1 → 63.18enisa_euvdEU
NetScaler ADC13.1 FIPS and NDcPP → 37.272enisa_euvdEU
NetScaler ADC14.1 → 72.61enisa_euvdEU
NetScaler ADC14.1 FIPS → 72.61enisa_euvdEU
NetScaler Gateway13.1 → 63.18enisa_euvdEU
NetScaler Gateway14.1 → 72.61enisa_euvdEU
Citrix Systems Inc. NetScaler ADC13.1 → 63.18fstec_bduRU
Citrix Systems Inc. NetScaler ADC14.1 → 72.61fstec_bduRU
Citrix Systems Inc. NetScaler ADC FIPS13.1 → 37.272fstec_bduRU
Citrix Systems Inc. NetScaler ADC FIPS14.1 → 72.61fstec_bduRU
Citrix Systems Inc. NetScaler ADC NDcPP13.1 → 37.272fstec_bduRU
Citrix Systems Inc. NetScaler Gateway13.1 → 63.18fstec_bduRU
Citrix Systems Inc. NetScaler Gateway14.1 → 72.61fstec_bduRU

showing 20 of 28

advisories (2)

Vendor and ecosystem advisories describing this.

NCSC-2026-0216Kwetsbaarheden verholpen in Citrix Netscaler ADC en Netscaler GatewayNL2026-06-30csaf · ncsc_nlNL
Citrix heeft kwetsbaarheden verholpen in NetScaler ADC en NetScaler Gateway die verband houden met onvoldoende invoervalidatie, onjuiste toegangscontrole en het onjuist vrijgeven van geheugen.
WID-SEC-W-2026-2147Citrix Systems NetScaler ADC und Gateway: Mehrere SchwachstellenDeutsch2026-06-30csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Citrix Systems NetScaler ADC und Gateway ausnutzen, um Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen oder andere, nicht näher spezifizierte Auswirkungen 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 ncsc_nl NVD CVE.org MITRE

published 2026-06-30modified 2026-07-01

references (3)

External citations — patches, advisories, analysis.

scry

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