CVE-2026-25710

Root escalation via privileged symlink-following file operations

Published May 13, 2026 · Updated May 13, 2026

Privilege escalation in KDE Plasma Login Manager 6.6.2 allows local users controlling the plasmalogin account to gain root access. The root-running plasmaloginauthhelper fails to drop privileges and follows attacker-controlled symlinks while changing ownership, deleting trees, and writing files. Exploitation requires control of the plasmalogin service account and is not reachable in the default installation.

CVSS severity7.0
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in KDE Plasma Login Manager 6.6.2 allows local users controlling the plasmalogin account to gain root access. The root-running plasmaloginauthhelper fails to drop privileges and follows attacker-controlled symlinks while changing ownership, deleting trees, and writing files. Exploitation requires control of the plasmalogin service account and is not reachable in the default installation.

The record

CVE
CVE-2026-25710
Published
May 13, 2026
Updated
May 13, 2026
Vendor
KDE
Product
Plasma Login Manager
Classifications
CWE-250, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 13, 2026CVE publishedPublication date reported by the CVE source.
  2. May 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0 <?

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

KDE · Plasma Login Managerversion=0 <?

Published CVSS scores

7.0SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-250Execution with Unnecessary Privileges
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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