How severe is CVE-2025-55146?

CVE-2025-55146 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-55146 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55146?

CVE-2025-55146 primarily affects Ivanti Connect Secure. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-55146?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-55146 have an EU (EUVD) identifier?

Yes. CVE-2025-55146 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27419.

When was CVE-2025-55146 published?

CVE-2025-55146 was published on 2025-09-09 and last updated on 2026-06-17.

CVE-2025-55146

CVE-2025-55146 is a medium-severity vulnerability in Ivanti Connect Secure with a CVSS 3.x base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-252.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-27419
Weakness: CWE-252
Affected product: Ivanti Connect Secure
Published: 2025-09-09
Last modified: 2026-06-17

Description

An unchecked return value 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 authenticated attacker with admin privileges to trigger a denial of service.

Frequently asked questions

What is CVE-2025-55146?: An unchecked return value 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 authenticated attacker with admin privileges to trigger a denial of service.
How severe is CVE-2025-55146?: CVE-2025-55146 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-55146 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55146?: CVE-2025-55146 primarily affects Ivanti Connect Secure. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-55146?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-55146 have an EU (EUVD) identifier?: Yes. CVE-2025-55146 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27419.
When was CVE-2025-55146 published?: CVE-2025-55146 was published on 2025-09-09 and last updated on 2026-06-17.

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_US

Affected products (31)

cpe:2.3:a:ivanti:connect_secure:*:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:-:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r1.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r1.2:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r1.3:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r1.4:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r1.5:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r2:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r2.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r2.2:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r2.3:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r2.4:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r2.5:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r2.6:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r2.7:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.7:r2.8:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:*:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:22.7:-:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:22.7:r1:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:22.7:r1.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:22.7:r1.2:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:22.7:r1.3:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:22.7:r1.4:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:22.7:r1.5:*:*:*:*:*:*
cpe:2.3:a:ivanti:zero_trust_access_gateway:22.8:r2.2:*:*:*:*:*:*
cpe:2.3:a:ivanti:neurons_for_secure_access:*:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:neurons_for_secure_access:22.8:r1:*:*:*:*:*:*
cpe:2.3:a:ivanti:neurons_for_secure_access:22.8:r1.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:neurons_for_secure_access:22.8:r1.2:*:*:*:*:*:*
cpe:2.3:a:ivanti:neurons_for_secure_access:22.8:r1.3:*:*:*:*:*:*

More vulnerabilities in Ivanti Connect Secure

CVE-2021-22893 — Critical (CVSS 10.0): Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the…
CVE-2019-11510 — Critical (CVSS 10.0): In Pulse Secure Pulse Connect Secure (PCS) 8.2 before 8.2R12.1, 8.3 before 8.3R7.1, and 9.0 before 9.0R3.4, an…
CVE-2016-4787 — Critical (CVSS 10.0): Pulse Connect Secure (PCS) 8.2 before 8.2r1, 8.1 before 8.1r2, 8.0 before 8.0r10, and 7.4 before 7.4r13.4 allow remote…
CVE-2025-22467 — Critical (CVSS 9.9): A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.6 allows a remote authenticated attacker…
CVE-2024-21894 — Critical (CVSS 9.8): A heap overflow vulnerability in IPSec component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure allows…
CVE-2018-20813 — Critical (CVSS 9.8): An input validation issue has been found with login_meeting.cgi in Pulse Secure Pulse Connect Secure 8.3RX before 8.3R2.

All CVEs affecting Ivanti Connect Secure →

Other CWE-252 vulnerabilities

CVE-2025-66565 — Critical (CVSS 9.8): Fiber Utils is a collection of common functions created for Fiber. In versions 2.0.0-rc.3 and below, when the system's…
CVE-2021-38171 — Critical (CVSS 9.8): adts_decode_extradata in libavformat/adtsenc.c in FFmpeg 4.4 does not check the init_get_bits return value, which is a…
CVE-2021-26955 — Critical (CVSS 9.8): An issue was discovered in the xcb crate through 2021-02-04 for Rust. It has a soundness violation because…
CVE-1999-0199 — Critical (CVSS 9.8): manual/search.texi in the GNU C Library (aka glibc) before 2.2 lacks a statement about the unspecified tdelete return…
CVE-2019-15900 — Critical (CVSS 9.8): An issue was discovered in slicer69 doas before 6.2 on certain platforms other than OpenBSD. On platforms without…
CVE-2010-0211 — Critical (CVSS 9.8): The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the…

Browse all CWE-252 vulnerabilities →