CVE-2018-3835: An exploitable out of bounds write vulnerability exists in version 2.2 of the Per Face Texture mapping applica

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HIGH 8.8DOWNGRADE

CVE-2018-3835 is a high-severity flaw (CVSS 8.8) affecting ptex. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An exploitable out of bounds write vulnerability exists in version 2.2 of the Per Face Texture mapping application known as PTEX. The vulnerability is present in the reading of a file without proper parameter checking. The value read in, is not verified to be valid and its use can lead to a buffer overflow, potentially resulting in code execution.

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	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-787
Published	2018-01-29
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: disneyanimation

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

Am I affected?

Timeline

2018-01-29 20:29 UTCPublished CVE record published
2026-06-17 01:57 UTCUpdated Record last modified

disneyanimation ptex DOWNGRADE

Affected: 2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.2 (Debian / Ubuntu)

apt-cache madison ptex sudo apt install ptex=<VERSION_BEFORE_2.2> sudo apt-mark hold ptex

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

dnf --showduplicates list ptex sudo dnf downgrade ptex-<VERSION_BEFORE_2.2> sudo dnf versionlock add ptex

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-2018-3835?

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

Is CVE-2018-3835 being exploited?

CVE-2018-3835 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-2018-3835 affect?

CVE-2018-3835 affects ptex. Severity is high (CVSS 8.8). An exploitable out of bounds write vulnerability exists in version 2.2 of the Per Face Texture mapping application known as PTEX. The vulnerability is present in the reading of a file without proper parameter checking. The value read in, is

How urgent is CVE-2018-3835?

Priority 57/100. High severity; Public exploit reference

References

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