Skip to content
Fencer Intel
high 7.1

CVE-2021-29328 json

OpenSource Moddable v10.5.0 was discovered to contain buffer over-read in the fxDebugThrow function at /moddable/xs/sources/xsDebug.c.

published 4y ago modified 4mo ago also EUVD-2021-15964

cvss
7.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

OpenSource Moddable v10.5.0 was discovered to contain buffer over-read in the fxDebugThrow function at /moddable/xs/sources/xsDebug.c.

Patch / fix

Is CVE-2021-29328 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/Moddable-OpenSource/moddable/issues/585 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.