CVE-2021-46346

There is an Assertion 'local_tza == ecma_date_local_time_zone_adjustment (date_value)' failed at ...

5.5 Medium

There is an Assertion 'local_tza == ecma_date_local_time_zone_adjustment (date_value)' failed at /jerry-core/ecma/builtin-objects/ecma-builtin-date-prototype.c(ecma_builtin_date_prototype_dispatch_set):421 in JerryScript 3.0.0.

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

0.64%Up 0.2 points since Jan 21, 2022

What each source reports

NVD Score used 5.5

Record: CVE-2021-46346
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness: CWE-617
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-46346
Updated: 2026-11-02

EUVDEUVD-2021-33034 No score

Record: EUVD-2021-33034
Updated: 2026-11-03

GitHub AdvisoriesGHSA-c97c-hrfm-f3wc No score

There is an Assertion 'local_tza == ecma_date_local_time_zone_adjustment (date_value)' failed at ...

Record: GHSA-c97c-hrfm-f3wc
Weakness: CWE-617
Updated: 2026-11-02

OSV 5.5

Record: CVE-2021-46346
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-2021-46346 5.5

Record: UBUNTU-CVE-2021-46346
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

jerryscript

Affected packages

Affected packages
Package	Affected	Fixed
`iotjs` Ubuntu:18.04:LTS	All versions, plus listed versions 1.0-1	None known
`iotjs` Ubuntu:22.04:LTS	All versions, plus listed versions 1.0+715-1ubuntu2	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2021-46346 is a medium vulnerability (CVSS 5.5) in Jerryscript, published January 20, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.64%, the 50th percentile. No source names a fixed version.