CVE-2022-1286

CRITICALNVD 9.89.8—

9.8

heap-buffer-overflow in mrb_vm_exec in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 69.4%
KEV: Not listed

Published

April 10, 2022

Last Modified

November 21, 2024

References (4)

security@huntrhttps://github.com/mruby/mruby/commit/b1d0296a937fe278239bdfac840a3fd0e93b3ee9
security@huntrhttps://huntr.dev/bounties/f918376e-b488-4113-963d-ffe8716e4189
af854a3a-2127-422b-91ae-364da2661108https://github.com/mruby/mruby/commit/b1d0296a937fe278239bdfac840a3fd0e93b3ee9
af854a3a-2127-422b-91ae-364da2661108https://huntr.dev/bounties/f918376e-b488-4113-963d-ffe8716e4189

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 00:16 UTCEG score recompute
2026-05-26 00:16 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2022-1286?

CVE-2022-1286 is a critical vulnerability published on April 10, 2022. heap-buffer-overflow in mrbvmexec in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.

When was CVE-2022-1286 disclosed?

CVE-2022-1286 was first published in the National Vulnerability Database on April 10, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-1286 actively exploited?

CVE-2022-1286 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 69.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-1286?

CVE-2022-1286 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2022-1286?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-1286, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2022-1286

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-1286?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)