Security readout for executives and security teams
Plain-English summary
CVE-2019-1010176 is a buffer overflow in JerryScript. A vulnerable build could crash, and the source says arbitrary code execution may be possible, when crafted JavaScript is executed. Business risk depends heavily on whether JerryScript processes untrusted scripts in your product or firmware.
Executive priority
Treat as inventory-driven. Escalate remediation for products that run untrusted JavaScript, because the reported impact includes denial of service and possible code execution. If JerryScript is absent or only used with trusted scripts, urgency is lower.
Technical view
The reported flaw affects JerryScript commit 4e58ccf68070671e1fff5cd6673f0c1d5b80b166 in lit_char_to_utf8_bytes at jerry-core/lit/lit-char-helpers.c:377. The attack vector is executing crafted JavaScript. The source identifies the fixed state as after commit 505dace719aebb3308a3af223cfaa985159efae0.
Likely exposure
Exposure is likely limited to products, embedded systems, or tooling built with the specific vulnerable JerryScript commit or nearby affected code, especially where untrusted JavaScript can run.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation evidence. Public source material describes crafted JavaScript as the attack vector, but does not provide verified exploitation status.
Researcher notes
Evidence is sparse: no CVSS, CWE, or confirmed exploit activity is provided. Analysis should center on source provenance, exact commit lineage, and whether lit_char_to_utf8_bytes is reachable through attacker-controlled JavaScript in the deployed environment.
Mitigation direction
- Inventory products and firmware using JerryScript.
- Upgrade JerryScript to a version after commit 505dace719aebb3308a3af223cfaa985159efae0.
- Avoid executing untrusted JavaScript in affected builds.
- Check JerryScript project guidance and downstream vendor advisories.
- Prioritize exposed script-processing paths over trusted internal-only uses.
Validation and detection
- Confirm the JerryScript commit or release embedded in each product.
- Search SBOMs and build manifests for JerryScript usage.
- Identify whether affected builds execute user-supplied JavaScript.
- Verify upgraded builds include the post-fix code state.
- Document compensating controls where upgrades are unavailable.
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.
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 lookupCVE-2019-1010176 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/2476CVE 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.