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TI-2021-20348 Aliases CVE-2021-44961GHSA-hmw9-9296-84q4

A memory leakage flaw exists in the class PerimeterGenerator of Slic3r libslic3r 1.3.0…

Priority LOW 26CWE-401Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-401.

Summary

A memory leakage flaw exists in the class PerimeterGenerator of Slic3r libslic3r 1.3.0 and Master Commit b1a5500. Specially crafted stl files can exhaust available memory. An attacker can provide malicious files to trigger this vulnerability.

Why it matters now

EPSS 0.00776 56th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:slic3r:libslic3r:1.3.0:*:*:*:*:*:*:*1.3.0VulnerableSlic3r
  • cpe:2.3:a:slic3r:libslic3r:1.3.0:*:*:*:*:*:*:* Versions 1.3.0 Vulnerable ·Slic3r

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-44961
  2. 2026-10-03 Alias added: GHSA-hmw9-9296-84q4

References

Exploit 1

  • TI-2022-17785 Improper array index validation in ADMesh CVSS 3.1HIGH 8.8
  • TI-2022-17029 Out-of-bounds write in Slic3r libslic3r CVSS 3.1HIGH 8.1
  • TI-2020-17323 Improper input validation in Slic3r CVSS 3.1MEDIUM 6.5
  • TI-2020-17322 Improper input validation in Slic3r CVSS 3.1MEDIUM 6.5
  • TI-2021-20349 An out-of-bounds read vulnerability exists in the GCode::extrude() functionality of… CVSS 3.1MEDIUM 5.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences