CVE-2021-44961
A memory leakage flaw exists in the class PerimeterGenerator of Slic3r libslic3r 1.3.0 and Master...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-44961- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:N/A:P - Weakness
- CWE-401
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-44961- Updated
- 2026-11-02
EUVDEUVD-2021-31759 No score
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.
- Record
EUVD-2021-31759- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-hmw9-9296-84q4
A memory leakage flaw exists in the class PerimeterGenerator of Slic3r libslic3r 1.3.0 and Master...
A memory leakage flaw exists in the class PerimeterGenerator of Slic3r libslic3r 1.3.0 and Master Commit b1a5500. A Specially crafAn 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.ted stl files can exhaust available memory.
- Record
GHSA-hmw9-9296-84q4- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2021-44961- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-44961
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.
- Record
DEBIAN-CVE-2021-44961- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-44961
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.
- Record
UBUNTU-CVE-2021-44961- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
slic3rDebian:12 |
All versions, plus listed versions 1.3.0+dfsg1-51.3.0+dfsg1-5.11.3.0+dfsg1-6 |
None known |
slic3rUbuntu:16.04:LTS |
All versions, plus listed versions 1.2.9+dfsg-21.2.9+dfsg-2build1 |
None known |
slic3rUbuntu:18.04:LTS |
All versions, plus listed versions 1.2.9+dfsg-6.11.2.9+dfsg-81.2.9+dfsg-9 |
None known |
slic3rUbuntu:20.04:LTS |
All versions, plus listed versions 1.3.0+dfsg1-31.3.0+dfsg1-3build11.3.0+dfsg1-3ubuntu1 |
None known |
slic3rUbuntu:22.04:LTS |
All versions, plus listed versions 1.3.0+dfsg1-51.3.0+dfsg1-5build1 |
None known |
slic3rUbuntu:24.04:LTS |
All versions, plus listed versions 1.3.0+dfsg1-5build21.3.0+dfsg1-5build31.3.0+dfsg1-5build41.3.0+dfsg1-5build51.3.0+dfsg1-5build6 |
None known |
slic3rUbuntu:25.10 |
All versions, plus listed versions 1.3.0+dfsg1-5.11.3.0+dfsg1-5.1build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-44961 is a medium vulnerability (CVSS 5.5) in Slic3r Libslic3r, published March 1, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.78%, the 56th percentile. No source names a fixed version.