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TI-2020-14502 Aliases CVE-2020-23257GHSA-jv2f-j4fc-4c7g

Buffer Overflow vulnerability found in Espruino 2v05.41 allows an attacker to cause a…

Priority MEDIUM 40CWE-120Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

Buffer Overflow vulnerability found in Espruino 2v05.41 allows an attacker to cause a denial of service via the function jsvGarbageCollectMarkUsed in file src/jsvar.c.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00869 59th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:espruino:espruino:2.05.41:*:*:*:*:*:*:*2.05.41VulnerableEspruino
  • cpe:2.3:o:espruino:espruino:2.05.41:*:*:*:*:*:*:* Versions 2.05.41 Vulnerable ·Espruino

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-23257
  2. 2026-10-03 Alias added: GHSA-jv2f-j4fc-4c7g

References

Exploit 1

Advisory 1

  • TI-2020-13677 An issue found in Espruino Espruino 6ea4c0a allows an attacker to execute arbitrrary code… CVSS 3.1CRITICAL 9.8
  • TI-2024-16632 Espruino 2v20 (commit fcc9ba4) was discovered to contain a Stack Overflow via the… CVSS 3.1HIGH 7.5
  • TI-2024-16633 Espruino 2v20 (commit fcc9ba4) was discovered to contain an Out-of-bounds Read via… CVSS 3.1HIGH 7.5
  • TI-2020-14418 Buffer overflow vulnerability in function jsvGetStringChars in Espruino before… CVSS 3.1CRITICAL 9.8
  • TI-2018-08298 Espruino before 1.99 allows attackers to cause a denial of service (application crash)… CVSS 3.0HIGH 7.8
  • TI-2022-08809 Espruino 2v11.251 was discovered to contain a stack buffer overflow via src/jsvar.c in jsvNewFromString. CVSS 3.1HIGH 7.8
See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences