CVE-2022-36788: A heap-based buffer overflow vulnerability exists in the TriangleMesh clone functionality of Slic3r libslic3r

This week

HIGH 8.1REMOTEDOWNGRADE

CVE-2022-36788 is a high-severity flaw (CVSS 8.1) affecting libslic3r. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A heap-based buffer overflow vulnerability exists in the TriangleMesh clone functionality of Slic3r libslic3r 1.3.0 and Master Commit b1a5500. A specially-crafted STL file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Why this priority

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

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

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-130, CWE-787
Published	2023-04-20
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: slic3r

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

Am I affected?

Timeline

2023-04-20 16:15 UTCPublished CVE record published
2026-06-17 04:53 UTCUpdated Record last modified

slic3r libslic3r DOWNGRADE

Affected: 1.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.0

1. Check installed version

apt-cache policy libslic3r || rpm -q libslic3r || libslic3r --version

2. No fixed release: DOWNGRADE to a release before 1.3.0 (Debian / Ubuntu)

apt-cache madison libslic3r sudo apt install libslic3r=<VERSION_BEFORE_1.3.0> sudo apt-mark hold libslic3r

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

dnf --showduplicates list libslic3r sudo dnf downgrade libslic3r-<VERSION_BEFORE_1.3.0> sudo dnf versionlock add libslic3r

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-2022-36788?

libslic3r: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-36788 being exploited?

CVE-2022-36788 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-2022-36788 affect?

CVE-2022-36788 affects libslic3r. Severity is high (CVSS 8.1). A heap-based buffer overflow vulnerability exists in the TriangleMesh clone functionality of Slic3r libslic3r 1.3.0 and Master Commit b1a5500. A specially-crafted STL file can lead to a heap buffer overflow. An attacker can provide a malici

How urgent is CVE-2022-36788?

Priority 51/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-38072 MEDIUM 6.5 DOWNGRADE DOWNGRADE An improper array index validation vulnerability exists in the stl_fix_normal_directions functionality of ADMe

References

← Back to latest CVEs