High severity · published Jan 14, 2022
CVE-2021-46020
An untrusted pointer dereference in mrb_vm_exec() of mruby v3.0.0 can lead to a segmentation fault or application crash
7.5
CVSS
1%
EPSS
No
On KEV
Description
An untrusted pointer dereference in mrb_vm_exec() of mruby v3.0.0 can lead to a segmentation fault or application crash.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MR
Mruby · Mruby
3.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-46020
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-46020
Exploit
https://github.com/mruby/mruby/issues/5613
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