CVE-2023-49556

Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial...

5.5 Medium

Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.

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

0.42%Up 0.3 points since Jan 10, 2024

What each source reports

NVD Score used 5.5

Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.

Record: CVE-2023-49556
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-120
Updated: 2026-11-02

CVE List 5.5

Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.

Record: CVE-2023-49556
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-120
Updated: 2026-11-02

EUVDEUVD-2023-53513 5.5

Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.

Record: EUVD-2023-53513
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-q795-pwf5-9r9x 5.5

Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial...

Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.

Record: GHSA-q795-pwf5-9r9x
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-120
Updated: 2026-11-02

OSVAZL-33355 5.5

CVE-2023-49556 affecting package yasm 1.3.0-17

Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.

Record: AZL-33355
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVAZL-35388 5.5

CVE-2023-49556 affecting package yasm 1.3.0-17

Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.

Record: AZL-35388
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-05

OSV 5.5

Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.

Record: CVE-2023-49556
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2023-49556 5.5

Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.

Record: DEBIAN-CVE-2023-49556
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2023-49556 5.5

Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.

Record: UBUNTU-CVE-2023-49556
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

yasm project yasm

Affected packages

Affected packages
Package	Affected	Fixed
`yasm` Azure Linux:2	through 1.3.0-17	None known
`yasm` Azure Linux:3	through 1.3.0-17	None known
`yasm` Debian:12	All versions, plus listed versions 1.3.0-41.3.0-51.3.0-61.3.0-71.3.0-8	None known
`yasm` Debian:13	All versions, plus listed versions 1.3.0-71.3.0-8	None known
`yasm` Debian:14	All versions, plus listed versions 1.3.0-71.3.0-8	None known
`yasm` Ubuntu:16.04:LTS	All versions, plus listed versions 1.3.0-2	None known
`yasm` Ubuntu:18.04:LTS	All versions, plus listed versions 1.3.0-21.3.0-2build1	None known
`yasm` Ubuntu:20.04:LTS	All versions, plus listed versions 1.3.0-2build11.3.0-2ubuntu1	None known
`yasm` Ubuntu:22.04:LTS	All versions, plus listed versions 1.3.0-2.1	None known
`yasm` Ubuntu:24.04:LTS	All versions, plus listed versions 1.3.0-4	None known
`yasm` Ubuntu:25.10	All versions, plus listed versions 1.3.0-51.3.0-7	None known
`yasm` Ubuntu:26.10	All versions, plus listed versions 1.3.0-8	None known
`yasm` Ubuntu:26.04:LTS	All versions, plus listed versions 1.3.0-71.3.0-8	None known

History

History
Recorded	Changed	Sources
Nov 5, 2026	facts	OSV
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-2023-49556 is a medium vulnerability (CVSS 5.5) in Yasm Project Yasm, published January 2, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.42%, the 36th percentile. No source names a fixed version.

Attack profile

How easy it is to exploit

What an attacker can affect

Exploit likelihood

What each source reports

Affected products

Affected packages

History

In short

References