CVE-2025-2338

tbeu matio io.c strdup_vprintf heap-based overflow

5.3 MediumFix available

A vulnerability, which was classified as critical, was found in tbeu matio 1.5.28. Affected is the function strdup_vprintf of the file src/io.c. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: Low

Exploit likelihood

0.56%Up 0.5 points since Mar 17, 2025

What each source reports

CVE List Score used 5.3

tbeu matio io.c strdup_vprintf heap-based overflow

Record: CVE-2025-2338
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1: 6.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
CVSS 3.0: 6.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
CVSS 2.0: 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
Weakness: CWE-122, CWE-119
Updated: 2026-11-02

EUVDEUVD-2025-6663 5.3

Record: EUVD-2025-6663
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Updated: 2026-11-02

GitHub AdvisoriesGHSA-8gp3-5r77-7gpx 5.3

A vulnerability, which was classified as critical, was found in tbeu matio 1.5.28. Affected is...

Record: GHSA-8gp3-5r77-7gpx
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Weakness: CWE-119
Updated: 2026-11-02

NVD 2.1

Record: CVE-2025-2338
CVSS 4.0: 2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CVSS 3.1: 8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-119, CWE-122
Updated: 2026-11-02

OSV 2.1

tbeu matio io.c strdup_vprintf heap-based overflow

Record: CVE-2025-2338
CVSS 4.0: 2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Weakness: CWE-119, CWE-122
Updated: 2026-11-02

OSVDEBIAN-CVE-2025-2338 8.1

Record: DEBIAN-CVE-2025-2338
CVSS 3.1: 8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2025-2338 2.1

Record: UBUNTU-CVE-2025-2338
CVSS 4.0: 2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1: 8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
CVSS 3.1: 6.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Updated: 2026-11-02

OSVopenSUSE-SU-2026:10002-1 No score

libmatio-devel-1.5.29-1.1 on GA media

These are all security issues fixed in the libmatio-devel-1.5.29-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2026:10002-1
Updated: 2026-11-02

OSVopenSUSE-SU-2026:20022-1 No score

Security update for matio

This update for matio fixes the following issues:

update to version 1.5.29:
- Fix printing rank-1-variable in Mat_VarPrint
- Fix array index out of bounds in Mat_VarPrint when printing UTF-8 character data (boo#1239678, CVE-2025-2337)
- Fix heap-based buffer overflow in strdup_vprintf (boo#1239677, CVE-2025-2338)
- Changed Mat_VarPrint to print all values of rank-2-variable
- Several other fixes, for example for access violations in Mat_VarPrint
Update to version 1.5.28:
- Fixed bug writing MAT_T_INT8/MAT_T_UINT8 encoded character array to compressed v5 MAT file (regression of v1.5.12).
- Fixed bug reading all-zero sparse array of v4 MAT file (regression of v1.5.18).
- Updated C99 snprintf.c.
- CMake: Enabled testing.
- Several other fixes, for example for access violations in Mat_VarPrint.

Record: openSUSE-SU-2026:20022-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`libmatio` Debian:12	before 1.5.23-2+deb12u1, plus listed versions 1.5.23-2	1.5.23-2+deb12u1
`libmatio` Debian:13	All versions, plus listed versions 1.5.28-21.5.29-11.5.30-11.5.30-21.5.30-31.5.30-41.6.0-1	None known
`libmatio` Debian:14	before 1.5.29-1, plus listed versions 1.5.28-2	1.5.29-1
`libmatio` Debian:11 From an advisory covering 3 CVEs	before 1.5.19-2+deb11u1, plus listed versions 1.5.19-2	1.5.19-2+deb11u1
`libmatio` Ubuntu:Pro:14.04:LTS	All versions, plus listed versions 1.5.1-11.5.2-11.5.2-1ubuntu11.5.2-1ubuntu1+esm1	None known
`libmatio` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 1.5.2-3build21.5.3-11.5.3-1ubuntu0.1~esm1	None known
`libmatio` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 1.5.10-11.5.11-11.5.11-1ubuntu0.1~esm1	None known
`libmatio` Ubuntu:Pro:20.04:LTS	All versions, plus listed versions 1.5.13-31.5.17-31.5.17-3ubuntu0.1~esm11.5.17-3ubuntu0.1~esm2	None known
`libmatio` Ubuntu:Pro:22.04:LTS	All versions, plus listed versions 1.5.19-21.5.21-11.5.21-1ubuntu0.1~esm1	None known
`libmatio` Ubuntu:24.04:LTS	All versions, plus listed versions 1.5.23-21.5.24-11.5.26-11.5.26-1build11.5.26-1build21.5.26-1build3	None known
`libmatio` Ubuntu:25.10	All versions, plus listed versions 1.5.28-1build11.5.28-2	None known
`matio` openSUSE:Tumbleweed From an advisory covering 2 CVEs	before 1.5.29-1.1	1.5.29-1.1
`matio` openSUSE:Leap 16.0 From an advisory covering 2 CVEs	before 1.5.29-bp160.1.1	1.5.29-bp160.1.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
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-2025-2338 is a medium vulnerability (CVSS 5.3) in Matio Project Matio, published March 16, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.56%, the 47th percentile. Fixed in libmatio 1.5.23-2+deb12u1.

References

Show 8 moreShow less