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CVE-2021-45005

Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by...

9.8 CriticalFix available

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

1.42%Up 0.5 points since Feb 15, 2022
90%50%10%1%

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 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV: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 CriticalCVSS: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 CriticalCVSS: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 CriticalCVSS: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

Affected packages
PackageAffectedFixed
mujs
Debian:12
before 1.1.3-4
1.1.3-4
mujs
Debian:13
before 1.1.3-4
1.1.3-4
mujs
Debian:14
before 1.1.3-4
1.1.3-4
mujs
Ubuntu: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
mujs
Ubuntu: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
mujs
openSUSE:Tumbleweed
before 1.2.0-2.1
1.2.0-2.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE 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.

References

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