Ming 0.4.8 has an out-of-bounds read vulnerability in the function newVar_N() in decompile.c which causes a huge information leak.

published 2022-03-07 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21002

cvss: 6.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-34342 updated 2026-03-27 cvss 8.8

ming: out-of-bounds read in newVar_N() in util/decompile.c

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.14% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/libming/libming/issues/205 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

n/a ming

Classification

Weakness

CWE-125 Out-of-bounds Read

References

github.com /libming/libming/issues/205
exploit, issue-tracking, third-party-advisory
bugzilla.redhat.com /show_bug.cgi?id=1969619
issue-tracking, third-party-advisory

Sources

CVE List CVE-2021-34342
NVD CVE-2021-34342

Fencer Vulns 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.

Summary