CVE-2006-4508: Unspecified vulnerability in (1) Tor 0.1.0.x before 0.1.0.18 and 0.1.1.x before 0.1.1.23, and (2) ScatterChat

Routine

MEDIUM 4.0UPGRADEDOWNGRADE

CVE-2006-4508 is a medium-severity flaw (CVSS 4.0) affecting scatterchat, tor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unspecified vulnerability in (1) Tor 0.1.0.x before 0.1.0.18 and 0.1.1.x before 0.1.1.23, and (2) ScatterChat before 1.0.2, allows remote attackers operating a Tor entry node to route arbitrary Tor traffic through clients or cause a denial of service (flood) via unspecified vectors.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.0 (Medium)
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Published	2006-08-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: scatterchat · tor

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

Am I affected?

Timeline

2006-08-31 23:04 UTCPublished CVE record published
2026-06-16 22:29 UTCUpdated Record last modified

scatterchat scatterchat UPGRADE

Affected: <= 1.0.1

Fixed in: newer than 1.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.0.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade scatterchat

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade scatterchat

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

tor tor DOWNGRADE

Affected: 0.1.0.1 · 0.1.0.2 · 0.1.0.3 · 0.1.0.4 · 0.1.0.5 · 0.1.0.6 · 0.1.0.7 · 0.1.0.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.1.0.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.1.0.1 (Debian / Ubuntu)

apt-cache madison tor sudo apt install tor=<VERSION_BEFORE_0.1.0.1> sudo apt-mark hold tor

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

dnf --showduplicates list tor sudo dnf downgrade tor-<VERSION_BEFORE_0.1.0.1> sudo dnf versionlock add tor

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-2006-4508?

scatterchat: upgrade to newer than 1.0.1; tor: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-4508 being exploited?

CVE-2006-4508 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-2006-4508 affect?

CVE-2006-4508 affects scatterchat, tor. Severity is medium (CVSS 4.0). Unspecified vulnerability in (1) Tor 0.1.0.x before 0.1.0.18 and 0.1.1.x before 0.1.1.23, and (2) ScatterChat before 1.0.2, allows remote attackers operating a Tor entry node to route arbitrary Tor traffic through clients or cause a denial

How urgent is CVE-2006-4508?

Priority 35/100. No elevated risk signals yet.

Related CVEs

CVE-2006-4021 LOW 2.6 DOWNGRADE The cryptographic module in ScatterChat 1.0.x allows attackers to identify patterns in large numbers of messag

References

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