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CVE Record

CVE-2020-22597: An issue in Jerrscript- project Jerryscrip v.

An issue in Jerrscript- project Jerryscrip v. 2.3.0 allows a remote attacker to execute arbitrary code via the ecma_builtin_array_prototype_object_slice parameter.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2020-22597 reports arbitrary code execution in JerryScript 2.3.0. The public record is sparse: no CVSS score, CWE, confirmed fix, or active exploitation evidence is provided. Organizations should first determine whether JerryScript 2.3.0 is embedded in products or services that process untrusted JavaScript.

Executive priority

Make this an exposure-confirmation priority. The reported impact is serious, but public evidence is incomplete. Escalate quickly if JerryScript 2.3.0 is present in internet-facing or customer-input processing systems.

Technical view

The CVE description attributes arbitrary code execution to the ecma_builtin_array_prototype_object_slice path in JerryScript 2.3.0. Public metadata does not define affected CPEs, root cause details, exploit maturity, or remediation. Treat exposure as most relevant where JerryScript executes attacker-controlled scripts in embedded, IoT, gateway, or application runtime contexts.

Likely exposure

Exposure is likely limited to systems, firmware, or applications embedding JerryScript 2.3.0, especially where external users can supply or influence JavaScript executed by the engine.

Exploitation context

The bundle does not show CISA KEV listing or cited evidence of active exploitation. The GitHub issue reference indicates public discussion exists, but the provided sources do not establish weaponized exploitation.

Researcher notes

The record appears low-detail and potentially typo-prone, listing no CPEs, CVSS, CWE, or explicit fixed release. Analysis should start from the CVE record and GitHub issue, then correlate with local build artifacts before assigning enterprise impact.

Mitigation direction

  • Inventory products and codebases for embedded JerryScript 2.3.0.
  • Check JerryScript project guidance and issue 3637 for fixed versions or patches.
  • Prioritize systems that execute untrusted or remotely supplied JavaScript.
  • Restrict untrusted script execution until vendor guidance is confirmed.
  • Ask vendors whether their firmware or products include affected JerryScript builds.

Validation and detection

  • Review SBOMs, firmware manifests, and dependency records for JerryScript 2.3.0.
  • Confirm whether any affected runtime processes user-controlled JavaScript.
  • Track vendor advisories or upstream project notes for remediation status.
  • Document systems where JerryScript exposure cannot be confirmed.
  • Verify compensating controls around script input, sandboxing, and runtime isolation.
Prepared
Confidence
low
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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2020-22597 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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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.