CVE•Published 2026-06-12•Modified 2026-06-16•1 article on news•5 live references•NVD data
CVE-2026-12043
Vulnerability data via NVD (ingested)
CVSS v3.1
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS percentile
25
Exploit Prediction Scoring System · top 75% of all CVEs
Weaknesses (CWE)
Description
Improper handling of HPACK dynamic table size updates in the AWS Common Runtime aws-c-http library might allow a remote threat actor operating a server to cause memory corruption on a connecting client application, potentially leading to arbitrary code execution, via a crafted sequence of HTTP/2 HEADERS frames. To remediate this issue, users should upgrade to aws-c-http version 0.11.0.
Timeline
Published 2026-06-12
Modified 2026-06-16
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-2026-12043Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-12043Censys host search filtered to this CVE id.
grep.app
CVE-2026-12043Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-12043GitHub code search for direct mentions.
Google dork
"CVE-2026-12043" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-12043 on GitHub.