CVE-2017-7875: In wallpaper.c in feh before v2.18.3, if a malicious client pretends to be the E17 window manager, it is possi

Q: How do I fix CVE-2017-7875?

feh: upgrade to newer than 2.18.2. Exact commands for each OS are on this page.

Q: Is CVE-2017-7875 being exploited?

CVE-2017-7875 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-2017-7875 affect?

CVE-2017-7875 affects feh. Severity is critical (CVSS 9.8). In wallpaper.c in feh before v2.18.3, if a malicious client pretends to be the E17 window manager, it is possible to trigger an out-of-boundary heap write while receiving an IPC message. An integer overflow leads to a buffer overflow and/or

Q: How urgent is CVE-2017-7875?

Priority 60/100. Critical severity; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2017-7875 is a critical-severity flaw (CVSS 9.8) affecting feh. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In wallpaper.c in feh before v2.18.3, if a malicious client pretends to be the E17 window manager, it is possible to trigger an out-of-boundary heap write while receiving an IPC message. An integer overflow leads to a buffer overflow and/or a double free.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-787
Published	2017-04-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: feh project

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

Am I affected?

Timeline

2017-04-14 18:59 UTCPublished CVE record published
2026-06-17 01:25 UTCUpdated Record last modified

feh project feh UPGRADE

Affected: <= 2.18.2

Fixed in: newer than 2.18.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.18.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade feh

Note

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

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-2017-7875?

feh: upgrade to newer than 2.18.2. Exact commands for each OS are on this page.

Is CVE-2017-7875 being exploited?

CVE-2017-7875 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-2017-7875 affect?

CVE-2017-7875 affects feh. Severity is critical (CVSS 9.8). In wallpaper.c in feh before v2.18.3, if a malicious client pretends to be the E17 window manager, it is possible to trigger an out-of-boundary heap write while receiving an IPC message. An integer overflow leads to a buffer overflow and/or

How urgent is CVE-2017-7875?

Priority 60/100. Critical severity; Remotely exploitable, no login, no user action

References

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