CVE-2026-4897

🔶 medium

Summary

A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to the `polkit-agent-helper-1` setuid binary via standard input (stdin). This unbounded input can lead to an out-of-memory (OOM) condition, resulting in a Denial of Service (DoS) for the system.

CVSS Score

5.5

Medium

EPSS Score

0.0

Exploit Probability

Published Date

2026-03-26

First Seen: 2026-03-27

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 32.7% of all 318,071 vulnerabilities in our database.

#214,189

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Mar 28, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

SSVC data provided by CISA

Last Modified 2026-04-21

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-770

📦 Affected Products 7

Vendor	Product	Status	Affected Versions
redhat	enterprise_linux	Affected	v10.0
redhat	enterprise_linux	Affected	v6.0
redhat	enterprise_linux	Affected	v7.0
redhat	enterprise_linux	Affected	v8.0
redhat	enterprise_linux	Affected	v9.0
freedesktop	polkit	Affected	v-
redhat	openshift_container_platform	Affected	v4.0

🔗 References 2

https://access.redhat.com/security/cve/CVE-2026-4897

Vendor Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2451739

Issue Tracking Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-4878	🔶 medium	6.7	0.0	A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use (TOCTOU) race condition...	2026-04-09
CVE-2026-35091	⚠️ high	8.2	0.3	A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Co...	2026-04-01
CVE-2026-35092	⚠️ high	7.5	1.0	A flaw was found in Corosync. An integer overflow vulnerability in Corosync's join message sanity validation allows a re...	2026-04-01
CVE-2026-5121	⚠️ high	7.5	0.1	A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer ...	2026-03-30
CVE-2026-28368	⚠️ high	8.7	0.1	A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where ...	2026-03-27
CVE-2026-28369	⚠️ high	8.7	0.1	A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more...	2026-03-27

These CVEs affect the same products