CVE-2026-88778

Q: How do I fix CVE-2026-88778?

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-2026-88778 being actively exploited?

Not that we know of. CVE-2026-88778 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.38% is the estimated probability that it will be exploited in the next 30 days. That is higher than 30% of all scored CVEs.

Q: How severe is CVE-2026-88778?

CVE-2026-88778 has a CVSS v3 base score of 7.5, rated high. 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-2026-88778 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.

HIGH

7.5

CVSS v3

NVD

Description

Predictable exact value from previous values vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23.

CWE-342

How to fix

Remediation Available

netscaler application delivery controllerNVD

Affected:>= 14.1, < 14.1-73.37Fixed in:14.1-73.37CVE-2026-88778derived from NVD

Affected:>= 13.1, < 13.1-64.23Fixed in:13.1-64.23CVE-2026-88778derived from NVD

Affected:>= 13.1, < 13.1.37.279Fixed in:13.1.37.279CVE-2026-88778derived from NVD

netscaler gatewayNVD

Affected:>= 13.1, < 13.1-64.23Fixed in:13.1-64.23CVE-2026-88778derived from NVD

Affected:>= 14.1, < 14.1-73.37Fixed in:14.1-73.37CVE-2026-88778derived from NVD

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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

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.38%probability of exploitation in 30 days

30thpercentile

Low risk: more likely to be exploited than 30% of all known CVEs.

References

Vendor Advisory1

support.citrix.com

Related Vulnerabilities

Other CWE-342 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16226	Critical	9.8	2.3%	-	-
CVE-2014-9196	High	7.6	2.3%	-	-
CVE-2022-27577	Critical	9.1	1.4%	-	Fix
CVE-2020-28388	Medium	6.5	1.4%	-	Fix
CVE-2023-3373	Medium	5.9	1.0%	-	Fix
CVE-2022-29930	High	8.7	0.9%	-	-

Common questions

How do I fix CVE-2026-88778?

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-2026-88778 being actively exploited?

Not that we know of. CVE-2026-88778 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.38% is the estimated probability that it will be exploited in the next 30 days. That is higher than 30% of all scored CVEs.

How severe is CVE-2026-88778?

CVE-2026-88778 has a CVSS v3 base score of 7.5, rated high. 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-2026-88778 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 2026-09-29.