CVE-2025-62686: A local privilege escalation vulnerability exists in the Plugin Alliance InstallationHelper service included w

Routine

MEDIUM 6.2DOWNGRADE

CVE-2025-62686 is a medium-severity flaw (CVSS 6.2) affecting installation manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A local privilege escalation vulnerability exists in the Plugin Alliance InstallationHelper service included with Plugin Alliance Installation Manager v1.4.0 on macOS. Due to the absence of a hardened runtime and a __RESTRICT segment, a local user may exploit the DYLD_INSERT_LIBRARIES environment variable to inject a dynamic library, potentially resulting in code execution with elevated privileges.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.2 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 92%)
CISA exploited list	No
Weakness	CWE-269
Published	2025-12-03
Last modified	2026-10-27

Publisher (CNA): MITRE · Vendor: plugin-alliance

Last updated 2026-10-27 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-03 17:15 UTCPublished CVE record published
2026-10-27 12:10 UTCUpdated Record last modified

plugin-alliance installation manager DOWNGRADE

Affected: 1.4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4.0

1. Check installed version

apt-cache policy installation-manager || rpm -q installation-manager || installation-manager --version

2. No fixed release: DOWNGRADE to a release before 1.4.0 (Debian / Ubuntu)

apt-cache madison installation-manager sudo apt install installation-manager=<VERSION_BEFORE_1.4.0> sudo apt-mark hold installation-manager

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list installation-manager sudo dnf downgrade installation-manager-<VERSION_BEFORE_1.4.0> sudo dnf versionlock add installation-manager

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-62686?

installation manager: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-62686 being exploited?

CVE-2025-62686 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-62686 affect?

CVE-2025-62686 affects installation manager. Severity is medium (CVSS 6.2). A local privilege escalation vulnerability exists in the Plugin Alliance InstallationHelper service included with Plugin Alliance Installation Manager v1.4.0 on macOS. Due to the absence of a hardened runtime and a __RESTRICT segment, a loc

How urgent is CVE-2025-62686?

Priority 29/100. Public exploit reference

Software pages

macOS vulnerabilities

Related CVEs

CVE-2025-55076 MEDIUM 6.2 DOWNGRADE A local privilege escalation vulnerability exists in the InstallationHelper service included with Plugin Allia

References

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