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CVE Record

CVE-2021-26197: An issue was discovered in JerryScript 2.4.0.

An issue was discovered in JerryScript 2.4.0. There is a SEGV in main_print_unhandled_exception in main-utils.c file.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2021-26197 is a reported crash in JerryScript 2.4.0, a lightweight JavaScript engine. The public record describes a segmentation fault in exception-printing code. Available sources do not provide CVSS, affected product inventory, exploitation evidence, or a confirmed fixed version, so business urgency depends on whether JerryScript 2.4.0 is present in exposed products or firmware.

Executive priority

Prioritize inventory first. This record is too sparse for severity-based escalation, but embedded JavaScript engines can be hard to find after release. If JerryScript 2.4.0 is in shipped or internet-facing products, treat follow-up as time-sensitive until project guidance clarifies impact and remediation.

Technical view

The CVE describes a SEGV in `main_print_unhandled_exception` in `main-utils.c` in JerryScript 2.4.0. The source bundle does not identify a CWE, root cause, reachable attack surface, impact beyond crash behavior, or patched release. Treat this as an availability and robustness issue until vendor or project guidance confirms broader impact.

Likely exposure

Exposure is likely limited to systems, embedded products, test tools, or applications that include JerryScript 2.4.0. The CVE record has no CPEs or normalized affected vendor/product data, so vulnerability managers should rely on internal software composition analysis and build manifests rather than external product matching.

Exploitation context

CISA KEV is false, and the provided sources do not state active exploitation. The public bundle only supports that a crash condition was reported. It does not support claims of remote exploitation, code execution, privilege escalation, or weaponized exploit availability.

Researcher notes

The evidence is thin: no CVSS, CWE, CPE, patch reference, or exploit-status source is included. The only technical claim is a segmentation fault in a named JerryScript function and source file. Avoid extrapolating beyond crash potential unless the GitHub issue or upstream commits provide stronger evidence.

Mitigation direction

  • Inventory applications, firmware, and build artifacts for JerryScript 2.4.0.
  • Review the GitHub issue and CVE record for confirmed remediation guidance.
  • Check upstream JerryScript release notes before selecting an upgrade target.
  • Reduce exposure of affected interpreters to untrusted JavaScript where feasible.
  • Track this CVE in vulnerability management until affected usage is ruled out.

Validation and detection

  • Confirm whether JerryScript 2.4.0 appears in SBOMs or dependency manifests.
  • Search runtime crash reports for `main_print_unhandled_exception` or related SEGVs.
  • Map any JerryScript usage to trust boundaries and script input sources.
  • Verify whether newer upstream versions address the referenced GitHub issue.
  • Document systems where exposure cannot be confirmed from available evidence.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2021-26197 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.