CVE-2020-25989: Privilege escalation via arbitrary file write in pritunl electron client 1.0.1116.6 through v1.2.2550.20

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HIGH 7.8UPGRADE

CVE-2020-25989 is a high-severity flaw (CVSS 7.8) affecting pritunl-client-electron. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Privilege escalation via arbitrary file write in pritunl electron client 1.0.1116.6 through v1.2.2550.20. Successful exploitation of the issue may allow an attacker to execute code on the effected system with root privileges.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-59
Published	2020-11-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pritunl

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-11-19 21:15 UTCPublished CVE record published
2026-06-17 03:07 UTCUpdated Record last modified

pritunl pritunl-client-electron UPGRADE

Affected: >= 1.0.1116.6 and <= 1.2.2550.20

Fixed in: newer than 1.2.2550.20

Safe to downgrade to: a release before 1.0.1116.6

1. Check installed version

apt-cache policy pritunl-client-electron || rpm -q pritunl-client-electron || pritunl-client-electron --version

2. UPGRADE to newer than 1.2.2550.20 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pritunl-client-electron

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pritunl-client-electron

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.0.1116.6 (Debian / Ubuntu)

apt-cache madison pritunl-client-electron sudo apt install pritunl-client-electron=<VERSION_BEFORE_1.0.1116.6> sudo apt-mark hold pritunl-client-electron

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list pritunl-client-electron sudo dnf downgrade pritunl-client-electron-<VERSION_BEFORE_1.0.1116.6> sudo dnf versionlock add pritunl-client-electron

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-2020-25989?

pritunl-client-electron: upgrade to newer than 1.2.2550.20. Exact commands for each OS are on this page.

Is CVE-2020-25989 being exploited?

CVE-2020-25989 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-2020-25989 affect?

CVE-2020-25989 affects pritunl-client-electron. Severity is high (CVSS 7.8). Privilege escalation via arbitrary file write in pritunl electron client 1.0.1116.6 through v1.2.2550.20. Successful exploitation of the issue may allow an attacker to execute code on the effected system with root privileges.

How urgent is CVE-2020-25989?

Priority 46/100. High severity; Public exploit reference

Software pages

Electron vulnerabilities

Related CVEs

CVE-2022-25372 HIGH 7.8 UPGRADE Pritunl Client through 1.2.3019.52 on Windows allows local privilege escalation, related to an ACL entry for C
CVE-2020-27519 HIGH 7.8 DOWNGRADE Pritunl Client v1.2.2550.20 contains a local privilege escalation vulnerability in the pritunl-service compone

References

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