CVE-2018-4001: An exploitable uninitialized pointer vulnerability exists in the Office Open XML parser of Atlantis Word Proce

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HIGH 7.8DOWNGRADE

CVE-2018-4001 is a high-severity flaw (CVSS 7.8) affecting atlantis word processor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An exploitable uninitialized pointer vulnerability exists in the Office Open XML parser of Atlantis Word Processor, version 3.2.5.0. A specially crafted document can cause an uninitialized pointer representing a TTableRow to be assigned to a variable on the stack. This variable is later dereferenced and then written to allow for controlled heap corruption, which can lead to code execution under the context of the application. An attacker must con

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.5% (top 27%)
CISA exploited list	No
Weakness	CWE-824
Published	2018-10-01
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: atlantiswordprocessor

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

Am I affected?

Timeline

2018-10-01 20:29 UTCPublished CVE record published
2026-06-17 01:58 UTCUpdated Record last modified

atlantiswordprocessor atlantis word processor DOWNGRADE

Affected: 3.2.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.2.5

1. Check installed version

apt-cache policy atlantis-word-processor || rpm -q atlantis-word-processor || atlantis-word-processor --version

2. No fixed release: DOWNGRADE to a release before 3.2.5 (Debian / Ubuntu)

apt-cache madison atlantis-word-processor sudo apt install atlantis-word-processor=<VERSION_BEFORE_3.2.5> sudo apt-mark hold atlantis-word-processor

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

dnf --showduplicates list atlantis-word-processor sudo dnf downgrade atlantis-word-processor-<VERSION_BEFORE_3.2.5> sudo dnf versionlock add atlantis-word-processor

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-2018-4001?

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

Is CVE-2018-4001 being exploited?

CVE-2018-4001 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-2018-4001 affect?

CVE-2018-4001 affects atlantis word processor. Severity is high (CVSS 7.8). An exploitable uninitialized pointer vulnerability exists in the Office Open XML parser of Atlantis Word Processor, version 3.2.5.0. A specially crafted document can cause an uninitialized pointer representing a TTableRow to be assigned to

How urgent is CVE-2018-4001?

Priority 51/100. High severity; Public exploit reference

Related CVEs

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CVE-2018-4000 HIGH 7.8 DOWNGRADE An exploitable double-free vulnerability exists in the Office Open XML parser of Atlantis Word Processor, vers
CVE-2018-3999 HIGH 7.8 DOWNGRADE An exploitable stack-based buffer overflow vulnerability exists in the JPEG parser of Atlantis Word Processor,

References

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