Is CVE-2025-5451 in the CISA KEV catalog?

No. CVE-2025-5451 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-5451?

CVE-2025-5451 has a CVSS v3 base score of 4.9 (MEDIUM).

What is the EPSS score for CVE-2025-5451?

CVE-2025-5451 has an EPSS score of 0.65% (47th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-5451?

Upgrade connect secure to 22.7 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2025-5451

MEDIUM

4.9

CVSS v3

NVD

Description

A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.8 and Ivanti Policy Secure before version 22.7R1.5 allows a remote authenticated attacker with admin rights to trigger a denial of service.

CWE-121Stack-based Buffer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

connect secureNVD

Affected:< 22.7Fixed in:22.7CVE-2025-5451derived from NVD

policy secureNVD

Affected:< 22.7Fixed in:22.7CVE-2025-5451derived from NVD

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 RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.65%probability of exploitation in 30 days

47thpercentile

Moderate risk: more likely to be exploited than 47% of all known CVEs.

References

Vendor Advisory1

forums.ivanti.com

Related Vulnerabilities

Other CWE-121 (Stack-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2009-0927	High	8.8	97%	KEV	Fix
CVE-2020-10924	High	8.8	87%	-	-
CVE-2022-20705	Critical	10.0	80%	-	-

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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 2025-07-15.