Critical severity · published Jul 7, 2023
CVE-2021-32495
Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function
9.1
CVSS
0.8%
EPSS
No
On KEV
Description
Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory afterwards. This will allow attackers to cause denial of service.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RA
radare2 · radare2
radare2 5.3.0-git 26142 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-32495
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-32495
Patch
https://github.com/radareorg/radare2/commit/5e16e2d1c9fe245e4c17005d779fde91ec0b9c05
Issue Tracking
https://github.com/radareorg/radare2/issues/18666
More from radare2
9.8
CVE-2026-8696
radare2 6.1.5 Use-After-Free via gdbr_pids_list()
9.8
CVE-2026-8695
radare2 6.1.5 Use-After-Free via gdbr_threads_list()
7.5
CVE-2021-32494
Radare2 has a division by zero vulnerability in Mach-O parser's rebase_buffer function