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Fencer Vulns
medium 5.5

CVE-2021-44974 json

radareorg radare2 version 5.5.2 is vulnerable to NULL Pointer Dereference via libr/bin/p/bin_symbols.c binary symbol parser.

published 2022-05-25 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-31772

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

radareorg radare2 version 5.5.2 is vulnerable to NULL Pointer Dereference via libr/bin/p/bin_symbols.c binary symbol parser.

Patch / fix

  • radare radare2 5.5.4
  • radare2 Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 5.5.4-r0

alpine advisories ALPINE-CVE-2021-44974

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • radare2 Arch Linux 5.6-1

arch linux advisories AVG-2748

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-2021-44974 updated cvss 3.3

radare2: NULL pointer dereference when parsing binary symbols in bin_symbols.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

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/radareorg/radare2/issues/19478 referenced PoC, tagged "exploit" by a source, unverified
  • census-labs.com https://census-labs.com/news/2022/05/24/multiple-vulnerabilities-in-radare2/ referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2022/05/25/1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

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.