CVE-2007-3659: Buffer overflow in the doBrowserAction function in FreeWRL 1.19.3 allows local users to execute arbitrary code

Routine

MEDIUM 4.6DOWNGRADE

CVE-2007-3659 is a medium-severity flaw (CVSS 4.6) affecting freewrl. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in the doBrowserAction function in FreeWRL 1.19.3 allows local users to execute arbitrary code via a crafted BROWSER environment variable. NOTE: it is not clear whether this issue crosses privilege boundaries.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.6 (Medium)
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Published	2007-07-10
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: freewrl

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

Am I affected?

Timeline

2007-07-10 19:30 UTCPublished CVE record published
2026-06-16 22:42 UTCUpdated Record last modified

freewrl freewrl DOWNGRADE

Affected: 1.19.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.19.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.19.3 (Debian / Ubuntu)

apt-cache madison freewrl sudo apt install freewrl=<VERSION_BEFORE_1.19.3> sudo apt-mark hold freewrl

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

dnf --showduplicates list freewrl sudo dnf downgrade freewrl-<VERSION_BEFORE_1.19.3> sudo dnf versionlock add freewrl

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-2007-3659?

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

Is CVE-2007-3659 being exploited?

CVE-2007-3659 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-2007-3659 affect?

CVE-2007-3659 affects freewrl. Severity is medium (CVSS 4.6). Buffer overflow in the doBrowserAction function in FreeWRL 1.19.3 allows local users to execute arbitrary code via a crafted BROWSER environment variable. NOTE: it is not clear whether this issue crosses privilege boundaries.

How urgent is CVE-2007-3659?

Priority 25/100. No elevated risk signals yet.

References

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