CVE-2020-25464

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-12-04 · updated 2026-06-17
Weakness: CWE-787

Description

Heap buffer overflow at moddable/xs/sources/xsDebug.c in Moddable SDK before before 20200903. The top stack frame is only partially initialized because the stack overflowed while creating the frame. This leads to a crash in the code sending the stack frame to the debugger.

Affected products

Moddable: before os200903 — fixed in os200903

How to fix

Upgrade to a fixed version: Moddable os200903. Check the vendor advisory for mitigations.

References

https://github.com/Moddable-OpenSource/moddable/issues/431
https://github.com/Moddable-OpenSource/moddable/issues/431

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