CVE-2019-7233: In libdoc through 2019-01-28, doc2text in catdoc.c has a NULL pointer dereference.

This month

HIGH 8.8DOWNGRADE

CVE-2019-7233 is a high-severity flaw (CVSS 8.8) affecting libdoc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In libdoc through 2019-01-28, doc2text in catdoc.c has a NULL pointer dereference.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Weakness	CWE-476
Published	2019-01-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: libdoc project

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

Am I affected?

Timeline

2019-01-30 21:29 UTCPublished CVE record published
2026-06-17 02:40 UTCUpdated Record last modified

libdoc project libdoc DOWNGRADE

Affected: 20190128

Fixed in: no fixed release known

Safe to downgrade to: a release before 20190128

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 20190128 (Debian / Ubuntu)

apt-cache madison libdoc sudo apt install libdoc=<VERSION_BEFORE_20190128> sudo apt-mark hold libdoc

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

dnf --showduplicates list libdoc sudo dnf downgrade libdoc-<VERSION_BEFORE_20190128> sudo dnf versionlock add libdoc

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-2019-7233?

libdoc: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-7233 being exploited?

CVE-2019-7233 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-2019-7233 affect?

CVE-2019-7233 affects libdoc. Severity is high (CVSS 8.8). In libdoc through 2019-01-28, doc2text in catdoc.c has a NULL pointer dereference.

How urgent is CVE-2019-7233?

Priority 54/100. High severity; Public exploit reference

Related CVEs

CVE-2019-7156 MEDIUM 6.5 UPGRADE In libdoc through 2019-01-28, calcFileBlockOffset in ole.c allows division by zero.
CVE-2018-20453 MEDIUM 6.5 UPGRADE The getlong function in numutils.c in libdoc through 2017-10-23 has a heap-based buffer over-read that allows
CVE-2018-20451 MEDIUM 6.5 UPGRADE The process_file function in reader.c in libdoc through 2017-10-23 has a heap-based buffer over-read that allo

References

← Back to latest CVEs