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CVE-2007-0454: Format string vulnerability in the afsacl.so VFS module in Samba 3.0.6 through 3.0.23d allows context-dependen

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HIGH 7.5WATCHLISTDOWNGRADEMITIGATEMITIGATE

CVE-2007-0454 is a high-severity flaw (CVSS 7.5) affecting samba, debian linux, mandrake linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Format string vulnerability in the afsacl.so VFS module in Samba 3.0.6 through 3.0.23d allows context-dependent attackers to execute arbitrary code via format string specifiers in a filename on an AFS file system, which is not properly handled during Windows ACL mapping.

Why this priority

  • High severity
  • EPSS top 6%: very likely to be exploited
  • On your watchlist

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

Risk facts

CVSS score7.5 (High)
EPSS exploit chance6.5% (top 6%)
CISA exploited listNo
WeaknessCWE-134
Published2007-02-06
Last modified2026-06-16
Publisher (CNA): Red Hat, Inc. · Vendor: debian · mandrakesoft · samba

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

Am I affected?

Timeline

samba samba DOWNGRADE
Affected: 3.0.6 · 3.0.7 · 3.0.8 · 3.0.9 · 3.0.10 · 3.0.11 · 3.0.12 · 3.0.13
Fixed in: no fixed release known
Safe to downgrade to: a release before 3.0.6
1. Check installed version
apt-cache policy samba || rpm -q samba || samba --version
2. No fixed release: DOWNGRADE to a release before 3.0.6 (Debian / Ubuntu)
apt-cache madison samba sudo apt install samba=<VERSION_BEFORE_3.0.6> sudo apt-mark hold samba
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list samba sudo dnf downgrade samba-<VERSION_BEFORE_3.0.6> sudo dnf versionlock add samba
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.
debian debian linux MITIGATE
Affected: 3.0 · 3.1
Fixed in: no fixed release known
Safe to downgrade to: a release before 3.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
mandrakesoft mandrake linux MITIGATE
Affected: 2006
Fixed in: no fixed release known
Safe to downgrade to: a release before 2006
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
mandrakesoft mandrake linux corporate server MITIGATE
Affected: 3.0 · 4.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 3.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
mandrakesoft mandrake linuxsoft 2007 MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
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-2007-0454?

samba: downgrade or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation; mandrake linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-0454 being exploited?

CVE-2007-0454 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-2007-0454 affect?

CVE-2007-0454 affects samba, debian linux, mandrake linux. Severity is high (CVSS 7.5). Format string vulnerability in the afsacl.so VFS module in Samba 3.0.6 through 3.0.23d allows context-dependent attackers to execute arbitrary code via format string specifiers in a filename on an AFS file system, which is not properly hand

How urgent is CVE-2007-0454?

Priority 55/100. High severity; EPSS top 6%: very likely to be exploited; On your watchlist

Software pages

Windows vulnerabilities · Debian vulnerabilities · Samba vulnerabilities

Related CVEs

References

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