CVE-2007-0829: avast! Server Edition before 4.7.726 does not demand a password in a certain intended context, even when a pas

Routine

MEDIUM 4.4DOWNGRADE

CVE-2007-0829 is a medium-severity flaw (CVSS 4.4) affecting avast antivirus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

avast! Server Edition before 4.7.726 does not demand a password in a certain intended context, even when a password has been set, which allows local users to bypass authentication requirements.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.4 (Medium)
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Published	2007-02-07
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: alwil

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

Am I affected?

Timeline

2007-02-07 22:28 UTCPublished CVE record published
2026-06-16 22:36 UTCUpdated Record last modified

alwil avast antivirus DOWNGRADE

Affected: 4.6.460 · 4.6.489 · 4.6.566 · 4.7.660 · 4.7.676

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.6.460

1. Check installed version

apt-cache policy avast-antivirus || rpm -q avast-antivirus || avast-antivirus --version

2. No fixed release: DOWNGRADE to a release before 4.6.460 (Debian / Ubuntu)

apt-cache madison avast-antivirus sudo apt install avast-antivirus=<VERSION_BEFORE_4.6.460> sudo apt-mark hold avast-antivirus

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

dnf --showduplicates list avast-antivirus sudo dnf downgrade avast-antivirus-<VERSION_BEFORE_4.6.460> sudo dnf versionlock add avast-antivirus

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-2007-0829?

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

Is CVE-2007-0829 being exploited?

CVE-2007-0829 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-2007-0829 affect?

CVE-2007-0829 affects avast antivirus. Severity is medium (CVSS 4.4). avast! Server Edition before 4.7.726 does not demand a password in a certain intended context, even when a password has been set, which allows local users to bypass authentication requirements.

How urgent is CVE-2007-0829?

Priority 22/100. No elevated risk signals yet.

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References

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