CVE-2019-20000: The malware scan function in BullGuard Premium Protection 20.0.371.8 has a TOCTOU issue that enables a symboli

This week

MEDIUM 5.9REMOTEDOWNGRADE

CVE-2019-20000 is a medium-severity flaw (CVSS 5.9) affecting premium protection. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The malware scan function in BullGuard Premium Protection 20.0.371.8 has a TOCTOU issue that enables a symbolic link attack, allowing privileged files to be deleted.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-367
Published	2019-12-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bullguard

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

Am I affected?

Timeline

2019-12-26 05:15 UTCPublished CVE record published
2026-06-17 02:29 UTCUpdated Record last modified

bullguard premium protection DOWNGRADE

Affected: 20.0.371.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 20.0.371.8

1. Check installed version

apt-cache policy premium-protection || rpm -q premium-protection || premium-protection --version

2. No fixed release: DOWNGRADE to a release before 20.0.371.8 (Debian / Ubuntu)

apt-cache madison premium-protection sudo apt install premium-protection=<VERSION_BEFORE_20.0.371.8> sudo apt-mark hold premium-protection

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

dnf --showduplicates list premium-protection sudo dnf downgrade premium-protection-<VERSION_BEFORE_20.0.371.8> sudo dnf versionlock add premium-protection

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-2019-20000?

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

Is CVE-2019-20000 being exploited?

CVE-2019-20000 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-2019-20000 affect?

CVE-2019-20000 affects premium protection. Severity is medium (CVSS 5.9). The malware scan function in BullGuard Premium Protection 20.0.371.8 has a TOCTOU issue that enables a symbolic link attack, allowing privileged files to be deleted.

How urgent is CVE-2019-20000?

Priority 42/100. Public exploit reference; Remotely exploitable, no login, no user action

References

← Back to latest CVEs