CVE-2017-9250

The lexer_process_char_literal function in jerry-core/parser/js/js-lexer.c in JerryScript 1.0...

7.5 High

The lexer_process_char_literal function in jerry-core/parser/js/js-lexer.c in JerryScript 1.0 does not skip memory allocation for empty strings, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via malformed JavaScript source code, related to the jmem_heap_free_block function.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

2.50%Up 0.9 points since Apr 14, 2021

What each source reports

NVD Score used 7.5

Record: CVE-2017-9250
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-476
Updated: 2026-11-02

CVE List No score

Record: CVE-2017-9250
Updated: 2026-11-02

EUVDEUVD-2017-18186 No score

Record: EUVD-2017-18186
Updated: 2026-11-03

GitHub AdvisoriesGHSA-7hxh-jjxh-rg67 7.5

The lexer_process_char_literal function in jerry-core/parser/js/js-lexer.c in JerryScript 1.0...

Record: GHSA-7hxh-jjxh-rg67
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-476
Updated: 2026-11-02

OSV 7.5

Record: CVE-2017-9250
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

jerryscript

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-9250 is a high vulnerability (CVSS 7.5) in Jerryscript, published May 28, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.50%, the 84th percentile. No source names a fixed version.