CVE-2023-36271

LibreDWG v0.12.5 was discovered to contain a heap buffer overflow via the function bit_wcs2nlen...

8.8 HighFix available

LibreDWG v0.10 to v0.12.5 was discovered to contain a heap buffer overflow via the function bit_wcs2nlen at bits.c.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.92%Up 0.9 points since Jun 24, 2023

What each source reports

NVD Score used 8.8

LibreDWG v0.10 to v0.12.5 was discovered to contain a heap buffer overflow via the function bit_wcs2nlen at bits.c.

Record: CVE-2023-36271
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-787
Updated: 2026-11-02

CVE List No score

LibreDWG v0.10 to v0.12.5 was discovered to contain a heap buffer overflow via the function bit_wcs2nlen at bits.c.

Record: CVE-2023-36271
Updated: 2026-11-02

EUVDEUVD-2023-40242 0.0

LibreDWG v0.10 to v0.12.5 was discovered to contain a heap buffer overflow via the function bit_wcs2nlen at bits.c.

Record: EUVD-2023-40242
CVSS: 0.0 NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-fx57-4pvv-5x6q 8.8

LibreDWG v0.12.5 was discovered to contain a heap buffer overflow via the function bit_wcs2nlen...

LibreDWG v0.12.5 was discovered to contain a heap buffer overflow via the function bit_wcs2nlen at bits.c.

Record: GHSA-fx57-4pvv-5x6q
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-787
Updated: 2026-11-02

OSV No score

LibreDWG v0.10 to v0.12.5 was discovered to contain a heap buffer overflow via the function bit_wcs2nlen at bits.c.

Record: CVE-2023-36271
Updated: 2026-11-02

OSVopenSUSE-SU-2023:0201-1 No score

Security update for libredwg

This update for libredwg fixes the following issues:

Update to version 0.12.5.5907

Security issues fixed:

CVE-2022-33025: Fixed multiple security issues [boo#1200898]
CVE-2023-36271: Fixed heap buffer overflow via the function bit_wcs2nlen [boo#1212709]
CVE-2023-36272: Fixed heap buffer overflow via the function bit_utf8_to_TU [boo#1212707]
CVE-2023-36273: Fixed heap buffer overflow via the function bit_calc_CRC [boo#1212706]
CVE-2023-36274: Fixed heap buffer overflow via the function bit_write_TF [boo#1212705]

Record: openSUSE-SU-2023:0201-1
Updated: 2026-11-02

OSVopenSUSE-SU-2024:13051-1 No score

libredwg-devel-0.12.5.5907-1.1 on GA media

These are all security issues fixed in the libredwg-devel-0.12.5.5907-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:13051-1
Updated: 2026-11-02

Affected products

gnu libredwg

Affected packages

Affected packages
Package	Affected	Fixed
`libredwg` SUSE:Package Hub 15 SP5	before 0.12.5.5907-bp155.3.3.1	0.12.5.5907-bp155.3.3.1
`libredwg` openSUSE:Leap 15.5	before 0.12.5.5907-bp155.3.3.1	0.12.5.5907-bp155.3.3.1
`libredwg` openSUSE:Tumbleweed	before 0.12.5.5907-1.1	0.12.5.5907-1.1

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-36271 is a high vulnerability (CVSS 8.8) in Gnu Libredwg, published June 23, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.92%, the 60th percentile. Fixed in libredwg 0.12.5.5907-bp155.3.3.1.

References

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