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CVE-2022-0631

29
FAUCET Score

CVE-2022-0631 is a critical heap-based buffer overflow vulnerability affecting Homebrew mruby versions prior to 3.2. This flaw allows for remote, unauthenticated attackers to execute arbitrary code with high impact on confidentiality, integrity, and availability. While no public exploits or active exploitation have been confirmed, the vulnerability has garnered significant community discussion, indicating potential interest. Organizations using affected mruby versions should prioritize patching to mitigate this severe risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.2CPE matchmatch criteria
cpe:2.3:a:mruby:mruby:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.5
Impact Score
3.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.92%
Probability of exploitation in next 30 days
EPSS Percentile
56.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0092 is in the 42nd percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / mruby/mruby/commit/47068ae07a5fa3aa9a1879cdfe98a9ce0f339299
PatchThird Party Advisory
huntr.dev / bounties/9bdc49ca-6697-4adc-a785-081e1961bf40
ExploitPatchThird Party Advisory