CVE-2018-11591

Severity: medium (CVSS 5.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-05-31 · updated 2026-06-17
Weakness: CWE-476

Description

Espruino before 1.98 allows attackers to cause a denial of service (application crash) with a user crafted input file via a NULL pointer dereference during syntax parsing. This was addressed by adding validation for a debug trace print statement in jsvar.c.

Affected products

Espruino: before 1.98 — fixed in 1.98

How to fix

Upgrade to a fixed version: Espruino 1.98. Check the vendor advisory for mitigations.

References

https://github.com/espruino/Espruino/commit/b6d362f6a1f2de0b3e7604848116efb509196bf4
https://github.com/espruino/Espruino/files/2015612/test.txt
https://github.com/espruino/Espruino/issues/1420
https://github.com/espruino/Espruino/commit/b6d362f6a1f2de0b3e7604848116efb509196bf4
https://github.com/espruino/Espruino/files/2015612/test.txt
https://github.com/espruino/Espruino/issues/1420

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