CVE-2018-1000636

6.5 MEDIUM 1% exploit odds Fix listed

What it is

JerryScript version Tested on commit f86d7459d195c8ba58479d1861b0cc726c8b3793. Analysing history it seems that the issue has been present since commit 64a340ffeb8809b2b66bbe32fd443a8b79fdd860 contains a CWE-476: NULL Pointer Dereference vulnerability in Triggering undefined behavior at jerry-core/ecma/builtin-objects/typedarray/ecma-builtin-typedarray-prototype.c:598 (passing NULL to memcpy as 2nd argument) results in null pointer dereference (segfault) at jerry-core/jmem/jmem-heap.c:463 that can result in Crash due to segmentation fault. This attack appear to be exploitable via The victim must execute specially crafted javascript code. This vulnerability appears to have been fixed in after commit 87897849f6879df10e8ad68a41bf8cf507edf710.

At a glance

Exploitability: Can be exploited over the network without logging in, but needs a user to act. High risk of service disruption.
Exploit odds: 1.1% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2018-08-20 19:31 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 01:32 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 1.1% in the next 30 days (EPSS).
Severity: 6.5 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2018-08-20 19:31 UTC
Last modified: 2026-06-17 01:32 UTC
Exploit probability: 1.1% · EPSS, next 30 days
Weakness: CWE-476 · NULL pointer dereference
Record status: Modified

Affected

Jerryscript 1.0

Attack profile CVSS 3.0 · 6.5

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2018-1000636.md and follow it. Check whether this project is affected by CVE-2018-1000636. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record