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No exploitation reportedFix available

CVE-2021-42863

No exploitation reported by the sources we read.

  • Published2022-05-12
  • Fixed in2021-10-15
  • WeaknessCWE-120

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A buffer overflow in ecma_builtin_typedarray_prototype_filter() in JerryScript version fe3a5c0 allows an attacker to construct a fake object or a fake arraybuffer with unlimited size.

Timeline

dates in UTC
  1. 2022-05-1213:15CVE publishedNVD

Versions per branch

NVD
Jerryscript
BranchAffectedFixed in
2021.x< 2021-10-152021-10-15

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • iotjsUbuntu:22.04:LTSall versions · no fixed version listed
  • iotjsUbuntu:18.04:LTSall versions · no fixed version listed

Full record on NVD

Fix

  1. Update Jerryscript to 2021-10-15

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2022-05-12
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-8264-28h8-qcwg

Frequently asked questions

What is CVE-2021-42863?

A buffer overflow in ecma_builtin_typedarray_prototype_filter() in JerryScript version fe3a5c0 allows an attacker to construct a fake object or a fake arraybuffer with unlimited size.

Is CVE-2021-42863 actively exploited?

Active exploitation of CVE-2021-42863 has not been confirmed. Its EPSS score was 1.7% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-42863?

CVE-2021-42863 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record