Skip to content
Fencer Vulns
medium 5.5

CVE-2021-44962 json

An out-of-bounds read vulnerability exists in the GCode::extrude() functionality of Slic3r libslic3r 1.3.0 and Master Commit b1a5500.

published 2022-03-01 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-31760

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

An out-of-bounds read vulnerability exists in the GCode::extrude() functionality of Slic3r libslic3r 1.3.0 and Master Commit b1a5500. A specially crafted stl file could lead to information disclosure. An attacker can provide a malicious file to trigger this vulnerability.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-44962 updated cvss 5.5

slic3r: specially crafted stl file could lead to information disclosure

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.01% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • hackmd.io https://hackmd.io/KSI1bwGfSyO7T8UCf0HeTw referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.