CVE-2000-0537: BRU backup software allows local users to append data to arbitrary files by specifying an alternate configurat

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HIGH 7.2DOWNGRADE

CVE-2000-0537 is a high-severity flaw (CVSS 7.2) affecting bru. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

BRU backup software allows local users to append data to arbitrary files by specifying an alternate configuration file with the BRUEXECLOG environmental variable.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.2 (High)
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Published	2000-06-05
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: tolis group

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2000-06-05 04:00 UTCPublished CVE record published
2026-06-16 21:51 UTCUpdated Record last modified

tolis group bru DOWNGRADE

Affected: 15.1 · 16.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 15.1

1. Check installed version

apt-cache policy bru || rpm -q bru || bru --version

2. No fixed release: DOWNGRADE to a release before 15.1 (Debian / Ubuntu)

apt-cache madison bru sudo apt install bru=<VERSION_BEFORE_15.1> sudo apt-mark hold bru

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

dnf --showduplicates list bru sudo dnf downgrade bru-<VERSION_BEFORE_15.1> sudo dnf versionlock add bru

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: BRU 15.1/16.0 - BRUEXECLOG Environment Variable

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-2000-0537?

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

Is CVE-2000-0537 being exploited?

CVE-2000-0537 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-2000-0537 affect?

CVE-2000-0537 affects bru. Severity is high (CVSS 7.2). BRU backup software allows local users to append data to arbitrary files by specifying an alternate configuration file with the BRUEXECLOG environmental variable.

How urgent is CVE-2000-0537?

Priority 44/100. High severity; Public exploit reference

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CVE-2002-0210 HIGH 7.2 DOWNGRADE setlicense for TOLIS Group Backup and Restore Utility (BRU) 17.0 allows local users to overwrite arbitrary fil

References

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