CVE-2018-17073: wernsey/bitmap before 2018-08-18 allows a NULL pointer dereference via a 4-bit image.

Q: How do I fix CVE-2018-17073?

bitmap: upgrade to 2018-09-24. Exact commands for each OS are on this page.

Q: Is CVE-2018-17073 being exploited?

CVE-2018-17073 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-2018-17073 affect?

CVE-2018-17073 affects bitmap. Severity is high (CVSS 7.5). wernsey/bitmap before 2018-08-18 allows a NULL pointer dereference via a 4-bit image.

Q: How urgent is CVE-2018-17073?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2018-17073 is a high-severity flaw (CVSS 7.5) affecting bitmap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

wernsey/bitmap before 2018-08-18 allows a NULL pointer dereference via a 4-bit image.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-476
Published	2018-09-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bitmap project

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

Am I affected?

Timeline

2018-09-16 02:29 UTCPublished CVE record published
2026-06-17 01:45 UTCUpdated Record last modified

bitmap project bitmap UPGRADE

Affected: < 2018-09-24

Fixed in: 2018-09-24

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2018-09-24 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade bitmap

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-2018-17073?

bitmap: upgrade to 2018-09-24. Exact commands for each OS are on this page.

Is CVE-2018-17073 being exploited?

CVE-2018-17073 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-2018-17073 affect?

CVE-2018-17073 affects bitmap. Severity is high (CVSS 7.5). wernsey/bitmap before 2018-08-18 allows a NULL pointer dereference via a 4-bit image.

How urgent is CVE-2018-17073?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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