CVE-2026-8452

Q: How do I fix CVE-2026-8452?

Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Q: Is CVE-2026-8452 being actively exploited?

Yes. CVE-2026-8452 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2026-08-29. Treat it as a priority whatever its CVSS score says.

Q: How severe is CVE-2026-8452?

CVE-2026-8452 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-8452 affect?

Published advisories record a fix for netscaler application delivery controller (NVD), netscaler gateway (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

CRITICALCISA KEVEPSS 74th pctl

9.8

CVSS v3

NVD

Description

Memory overflow vulnerability NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if the appliance is configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server

CWE-119Buffer Overflow

How to fix

Remediation Available

netscaler application delivery controllerNVD

Affected:>= 13.1, < 13.1-63.18Fixed in:13.1-63.18CVE-2026-8452derived from NVD

Affected:< 13.1-37.272Fixed in:13.1-37.272CVE-2026-8452derived from NVD

Affected:>= 14.1, < 14.1-72.61Fixed in:14.1-72.61CVE-2026-8452derived from NVD

netscaler gatewayNVD

Affected:>= 13.1, < 13.1-63.18Fixed in:13.1-63.18CVE-2026-8452derived from NVD

Affected:>= 14.1, < 14.1-72.61Fixed in:14.1-72.61CVE-2026-8452derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.61%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-08-29

References

Vendor Advisory1

support.citrix.com

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

Common questions

How do I fix CVE-2026-8452?

Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-8452 being actively exploited?

Yes. CVE-2026-8452 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2026-08-29. Treat it as a priority whatever its CVSS score says.

How severe is CVE-2026-8452?

CVE-2026-8452 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-8452 affect?

Published advisories record a fix for netscaler application delivery controller (NVD), netscaler gateway (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-27.