There is a heap-buffer-overflow at lit-strings.c:431 in lit_read_code_unit_from_utf8 in JerryScript 2.2.0.
Priority MEDIUM 45CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
There is a heap-buffer-overflow at lit-strings.c:431 in lit_read_code_unit_from_utf8 in JerryScript 2.2.0.
Why it matters now
EPSS 0.01314 70th 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
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jerryscript:jerryscript:2.2.0:*:*:*:*:*:*:* | 2.2.0 | Vulnerable | JerryScript |
- cpe:2.3:a:jerryscript:jerryscript:2.2.0:*:*:*:*:*:*:* Versions 2.2.0 Vulnerable ·JerryScript
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-23321
- 2026-10-03 Alias added: GHSA-q6cq-2jc2-cpx5
References
More Jerryscript vulnerabilities
- TI-2023-20218 Buffer Overflwo vulnerability in JerryScript Project jerryscript v.3.0.0 allows a remote… CVSS 3.1CRITICAL 9.8
- TI-2023-18120 Buffer Overflow vulnerability in JerryScript version 3.0, allows remote attackers to… CVSS 3.1CRITICAL 9.8
- TI-2020-14354 An issue in Jerrscript- project Jerryscrip v. CVSS 3.1CRITICAL 9.8
- TI-2023-17424 Jerryscript 3.0 (commit 05dbbd1) was discovered to contain an Assertion Failure via the… CVSS 3.1HIGH 7.5
- TI-2023-15262 Jerryscript 3.0 (commit 05dbbd1) was discovered to contain a heap-buffer-overflow via the… CVSS 3.1HIGH 7.8
- TI-2023-15261 Jerryscript 3.0 (commit 05dbbd1) was discovered to contain a heap-buffer-overflow via the… CVSS 3.1HIGH 7.8
Sources
- CVE-2020-23321 · CVE Program
- CVE-2020-23321 · NVD
- FIRST EPSS
- GHSA-q6cq-2jc2-cpx5 · GitHub Advisory Database · CC BY 4.0
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