CVE-2021-26195
An issue was discovered in JerryScript 2.4.0. There is a heap-buffer-overflow in...
An issue was discovered in JerryScript 2.4.0. There is a heap-buffer-overflow in lexer_parse_number in js-lexer.c file.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in JerryScript 2.4.0. There is a heap-buffer-overflow in lexer_parse_number in js-lexer.c file.
- Record
CVE-2021-26195- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in JerryScript 2.4.0. There is a heap-buffer-overflow in lexer_parse_number in js-lexer.c file.
- Record
CVE-2021-26195- Updated
- 2026-11-02
EUVDEUVD-2021-13012 No score
An issue was discovered in JerryScript 2.4.0. There is a heap-buffer-overflow in lexer_parse_number in js-lexer.c file.
- Record
EUVD-2021-13012- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-cwvq-w8fq-x88c No score
An issue was discovered in JerryScript 2.4.0. There is a heap-buffer-overflow in...
An issue was discovered in JerryScript 2.4.0. There is a heap-buffer-overflow in lexer_parse_number in js-lexer.c file.
- Record
GHSA-cwvq-w8fq-x88c- Weakness
- CWE-787
- Updated
- 2026-11-02
OSV
An issue was discovered in JerryScript 2.4.0. There is a heap-buffer-overflow in lexer_parse_number in js-lexer.c file.
- Record
CVE-2021-26195- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-26195
An issue was discovered in JerryScript 2.4.0. There is a heap-buffer-overflow in lexer_parse_number in js-lexer.c file.
- Record
UBUNTU-CVE-2021-26195- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-26195 is a high vulnerability (CVSS 8.8) in Jerryscript, published June 10, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.12%, the 66th percentile. No source names a fixed version.