CVE-2025-55143

Name: CVE-2025-55143
Creator: NVD / NIST
Published: 2025-09-09T16:15:34.36+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.66%

Last modified Jun 17, 2026

CVE-2025-55143 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Reflected text injection in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to inject arbitrary text into a crafted HTTP response. User interaction is required.. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

Reflected text injection in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to inject arbitrary text into a crafted HTTP response. User interaction is required.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.66%

47.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions	Update
Ivanti	Connect Secure	< 22.7	—
Ivanti	Connect Secure	22.7	—
Ivanti	Policy Secure	< 22.7	—
Ivanti	Policy Secure	22.7	—
Ivanti	Zero Trust Access Gateway	22.8	R2.2
Ivanti	Neurons For Secure Access	< 22.8	—
Ivanti	Neurons For Secure Access	22.8	R1

References

https://forums.ivanti.com/s/article/September-Security-Advisory-Ivanti-Connect-Secure-Policy-Secure-ZTA-Gateways-and-Neurons-for-Secure-Access-Multiple-CVEs?language=en_USVendor Advisory

Timeline

Published: Sep 9, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-55143?

How severe is CVE-2025-55143?

CVE-2025-55143 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2025-55143?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST