CVE-2020-27519: Pritunl Client v1.2.2550.20 contains a local privilege escalation vulnerability in the pritunl-service compone

Routine

HIGH 7.8DOWNGRADE

CVE-2020-27519 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.

Pritunl Client v1.2.2550.20 contains a local privilege escalation vulnerability in the pritunl-service component. The attack vector is: malicious openvpn config. A local attacker could leverage the log and log-append along with log injection to create or append to privileged script files and execute code as root/SYSTEM.

Why this priority

High severity

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

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 72%)
CISA exploited list	No
Weakness	CWE-269
Published	2021-04-30
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

2021-04-30 14:15 UTCPublished CVE record published
2026-06-17 03:09 UTCUpdated Record last modified

pritunl pritunl-client-electron DOWNGRADE

Affected: 1.2.2550.20

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.2550.20

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2.2550.20 (Debian / Ubuntu)

apt-cache madison pritunl-client-electron sudo apt install pritunl-client-electron=<VERSION_BEFORE_1.2.2550.20> sudo apt-mark hold pritunl-client-electron

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

dnf --showduplicates list pritunl-client-electron sudo dnf downgrade pritunl-client-electron-<VERSION_BEFORE_1.2.2550.20> 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-2020-27519?

pritunl-client-electron: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-27519 being exploited?

CVE-2020-27519 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-2020-27519 affect?

CVE-2020-27519 affects pritunl-client-electron. Severity is high (CVSS 7.8). Pritunl Client v1.2.2550.20 contains a local privilege escalation vulnerability in the pritunl-service component. The attack vector is: malicious openvpn config. A local attacker could leverage the log and log-append along with log injectio

How urgent is CVE-2020-27519?

Priority 34/100. High severity

Software pages

OpenVPN vulnerabilities · 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-2020-25989 HIGH 7.8 UPGRADE Privilege escalation via arbitrary file write in pritunl electron client 1.0.1116.6 through v1.2.2550.20

References

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