CVE•Published 2026-09-09•Modified 2026-09-10•0 articles on news•4 live references•NVD data
CVE-2026-86547
Vulnerability data via NVD (ingested)
CVSS v3.1
6.2
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS percentile
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Weaknesses (CWE)
Description
mrubyc through 4.0.0 contains a null pointer dereference vulnerability in the op_enter() handler in src/vm.c when processing untrusted bytecode. Attackers can craft malicious .mrb bytecode files with OP_ENTER instructions at the top level to crash the embedding application and cause denial of service.
Timeline
Published 2026-09-09
Modified 2026-09-10
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-86547Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-86547Censys host search filtered to this CVE id.
grep.app
CVE-2026-86547Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-86547GitHub code search for direct mentions.
Google dork
"CVE-2026-86547" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-86547 on GitHub.
We haven't classified any articles referencing CVE-2026-86547 yet. The external references above still apply.