Security readout for executives and security teams
Plain-English summary
JerryScript 1.0 has a memory-reading bug while parsing a malformed regular expression. For organizations, the concern is mainly embedded or constrained devices that include this JavaScript engine. The public sources do not provide a severity score, confirmed impact, patch version, or active exploitation evidence.
Executive priority
Treat this as an inventory and vendor-follow-up item unless JerryScript 1.0 processes untrusted code in exposed products. Urgency rises for embedded devices or customer-facing services using this engine.
Technical view
The CVE describes a heap-based buffer over-read in lit_read_code_unit_from_utf8, reached during RegExp character-class parsing in re_parse_char_class. The affected source naming is JerryScript 1.0. No CVSS, CWE, CPE, or detailed downstream impact is provided in the supplied sources.
Likely exposure
Exposure is most likely in products, firmware, or services embedding JerryScript 1.0 and parsing untrusted JavaScript. The CVE record does not enumerate affected vendors, CPEs, or deployment contexts.
Exploitation context
The reference issue identifies a malformed RegExp trigger, but the supplied sources do not show exploitation in the wild. The CVE is not listed as KEV in the provided bundle.
Researcher notes
The strongest evidence is the CVE description and linked GitHub issue. Missing data includes CVSS, CWE classification, CPE mapping, affected downstream products, fixed commit, and proven exploitability beyond the reported malformed RegExp case.
Mitigation direction
- Inventory products and firmware that embed JerryScript 1.0.
- Review JerryScript issue 2237 and vendor guidance for confirmed fixes.
- Update affected embedded engine builds when maintainers identify a corrected version.
- Restrict untrusted JavaScript parsing where JerryScript 1.0 remains deployed.
Validation and detection
- Check SBOMs and build manifests for JerryScript 1.0.
- Inspect embedded runtime dependencies in firmware and appliance images.
- Confirm whether untrusted JavaScript or RegExp input reaches JerryScript.
- Track vendor advisories because the CVE record lacks patch details.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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.
CVE-2018-11418 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/jerryscript-project/jerryscript/issues/2237CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.