CVE-2017-8849: smb4k before 2.0.1 allows local users to gain root privileges by leveraging failure to verify arguments to the

Q: How do I fix CVE-2017-8849?

smb4k: upgrade to newer than 2.0.0; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2017-8849 being exploited?

CVE-2017-8849 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2017-8849 affect?

CVE-2017-8849 affects smb4k, debian linux. Severity is high (CVSS 7.8). smb4k before 2.0.1 allows local users to gain root privileges by leveraging failure to verify arguments to the mount helper DBUS service.

Q: How urgent is CVE-2017-8849?

Priority 57/100. High severity; Public exploit reference; On your watchlist

This month

HIGH 7.8WATCHLISTUPGRADEMITIGATE

CVE-2017-8849 is a high-severity flaw (CVSS 7.8) affecting smb4k, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

smb4k before 2.0.1 allows local users to gain root privileges by leveraging failure to verify arguments to the mount helper DBUS service.

Why this priority

High severity
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Weakness	CWE-20
Published	2017-05-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: debian · smb4k project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-05-17 14:29 UTCPublished CVE record published
2026-06-17 01:27 UTCUpdated Record last modified

smb4k project smb4k UPGRADE

Affected: <= 2.0.0

Fixed in: newer than 2.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy smb4k || rpm -q smb4k || smb4k --version

2. UPGRADE to newer than 2.0.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade smb4k

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade smb4k

Note

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

debian debian linux MITIGATE

Affected: 8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

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.

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: KDE 4/5 - 'KAuth' Local Privilege Escalation

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-2017-8849?

smb4k: upgrade to newer than 2.0.0; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-8849 being exploited?

CVE-2017-8849 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-2017-8849 affect?

CVE-2017-8849 affects smb4k, debian linux. Severity is high (CVSS 7.8). smb4k before 2.0.1 allows local users to gain root privileges by leveraging failure to verify arguments to the mount helper DBUS service.

How urgent is CVE-2017-8849?

Priority 57/100. High severity; Public exploit reference; On your watchlist

Software pages

Debian vulnerabilities

Related CVEs

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CVE-2007-0473 LOW 1.9 DOWNGRADE The writeFile function in core/smb4kfileio.cpp in Smb4K before 0.8.0 does not preserve /etc/sudoers permission
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References

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