HOMEVULNERABILITIESCVE-2022-1201
MEDIUM

CVE-2022-1201

CWE-476Published: April 2, 2022· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

NULL Pointer Dereference in mrb_vm_exec with super in GitHub repository mruby/mruby prior to 3.2. This vulnerability is capable of making the mruby interpreter crash, thus affecting the availability of the system.

NVD Source

Technical Analysis

CVE-2022-1201 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeChanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Affected Vendors & Products

mruby1 product(s)
mruby
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/mruby/mruby/commit/00acae117da1b45b318dc36531a7b0021b8097ae
PATCHhttps://github.com/mruby/mruby/commit/00acae117da1b45b318dc36531a7b0021b8097ae
ADVISORYhttps://huntr.dev/bounties/6f930add-c9d8-4870-ae56-d4bd8354703b
ADVISORYhttps://huntr.dev/bounties/6f930add-c9d8-4870-ae56-d4bd8354703b

All References (4)

→
https://github.com/mruby/mruby/commit/00acae117da1b45b318dc36531a7b0021b8097aePatch · Third Party Advisory
→
https://huntr.dev/bounties/6f930add-c9d8-4870-ae56-d4bd8354703bExploit · Third Party Advisory
→
https://github.com/mruby/mruby/commit/00acae117da1b45b318dc36531a7b0021b8097aePatch · Third Party Advisory
→
https://huntr.dev/bounties/6f930add-c9d8-4870-ae56-d4bd8354703bExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2022-1201
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-476
CISA KEVNo
Affected1 vendor(s)
PublishedApr 2, 2022

Related CVEs (CWE-476)

CVE-2022-36648
10.0
CVE-2010-2495
10.0
CVE-2022-26093
9.8
CVE-2024-40493
9.8
CVE-2015-9073
9.8
CVE-2022-26094
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-1201 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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