Vulnerability · Published Feb 14, 2023 · Assigned by mitre
CVE-2021-46023
High 7.5
In plain English
A high-severity memory corruption in the mruby package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.8%top 44.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An Untrusted Pointer Dereference was discovered in function mrb_vm_exec in mruby before 3.1.0-rc. The vulnerability causes a segmentation fault and application crash.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mruby | 3.1.0-1 | DEBIAN-CVE-2021-46023 |
| Debian:13 | mruby | 3.1.0-1 | DEBIAN-CVE-2021-46023 |
| Debian:14 | mruby | 3.1.0-1 | DEBIAN-CVE-2021-46023 |
| Ubuntu:22.04:LTS | mruby | no fix listed | UBUNTU-CVE-2021-46023 |
| Ubuntu:24.04:LTS | mruby | no fix listed | UBUNTU-CVE-2021-46023 |
| Ubuntu:25.10 | mruby | no fix listed | UBUNTU-CVE-2021-46023 |
| Ubuntu:26.04:LTS | mruby | no fix listed | UBUNTU-CVE-2021-46023 |
| Ubuntu:26.10 | mruby | no fix listed | UBUNTU-CVE-2021-46023 |
Affected products (as reported)
Weakness: CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H