CVE-2021-45005
Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by...
Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by conflicting JumpList of nested try/finally statements.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
9.8
Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by conflicting JumpList of nested try/finally statements.
- Record
CVE-2021-45005- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE List No score
Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by conflicting JumpList of nested try/finally statements.
- Record
CVE-2021-45005- Updated
- 2026-11-02
EUVDEUVD-2021-31803 No score
Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by conflicting JumpList of nested try/finally statements.
- Record
EUVD-2021-31803- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4ch9-x597-xpg3 No score
Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by...
Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by conflicting JumpList of nested try/finally statements.
- Record
GHSA-4ch9-x597-xpg3- Weakness
- CWE-787
- Updated
- 2026-11-02
OSV
9.8
Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by conflicting JumpList of nested try/finally statements.
- Record
CVE-2021-45005- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-45005
9.8
Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by conflicting JumpList of nested try/finally statements.
- Record
DEBIAN-CVE-2021-45005- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-45005
9.8
Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by conflicting JumpList of nested try/finally statements.
- Record
UBUNTU-CVE-2021-45005- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVopenSUSE-SU-2024:11851-1 No score
mujs-1.2.0-2.1 on GA media
These are all security issues fixed in the mujs-1.2.0-2.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:11851-1- Updated
- 2026-11-02
OSVUSN-7575-1 No score
mujs vulnerabilities
It was discovered that MuJS did not correctly handle try/finally statements, which could lead to a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2021-45005)
Han Zheng discovered that MuJS did not correctly handle recursion, which could lead to stack exhaustion. An attacker could possibly use this issue to cause a denial of service. (CVE-2022-30974)
Han Zheng discovered that MuJS did not correctly handle certain memory operations. An attacker could possibly use this issue to cause a denial of service. (CVE-2022-30975)
- Record
USN-7575-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mujsDebian:12 |
before 1.1.3-4 | 1.1.3-4 |
mujsDebian:13 |
before 1.1.3-4 | 1.1.3-4 |
mujsDebian:14 |
before 1.1.3-4 | 1.1.3-4 |
mujsUbuntu:Pro:22.04:LTS |
before 1.1.3-3ubuntu0.1~esm1, plus listed versions 1.1.0-11.1.3-21.1.3-3 |
1.1.3-3ubuntu0.1~esm1 |
mujsUbuntu:Pro:22.04:LTS From an advisory covering 3 CVEs |
before 1.1.3-3ubuntu0.1~esm1, plus listed versions 1.1.0-11.1.3-21.1.3-3 |
1.1.3-3ubuntu0.1~esm1 |
mujsopenSUSE:Tumbleweed |
before 1.2.0-2.1 | 1.2.0-2.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-45005 is a critical vulnerability (CVSS 9.8) in Artifex Mujs, published February 14, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.42%, the 72nd percentile. Fixed in mujs 1.1.3-4.