CVE•Published 2026-08-21•Modified 2026-10-12•0 articles on news•3 live references•NVD data
CVE-2026-77220
Vulnerability data via NVD (ingested)
CVSS v3.1
6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS percentile
35
Exploit Prediction Scoring System · top 65% of all CVEs
Weaknesses (CWE)
Description
PDFio before 1.6.5 contains a dangling pointer vulnerability in the dictionary string-formatting function that stores a pointer to a stack-local buffer in the document dictionary without copying the string value. In multi-threaded or pooled-request environments, attackers or concurrent users can trigger stack memory reuse across requests, causing cross-tenant document content corruption by silently overwriting one caller's dictionary string values with another caller's data.
Timeline
Published 2026-08-21
Modified 2026-10-12
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-2026-77220Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-77220Censys host search filtered to this CVE id.
grep.app
CVE-2026-77220Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-77220GitHub code search for direct mentions.
Google dork
"CVE-2026-77220" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-77220 on GitHub.
We haven't classified any articles referencing CVE-2026-77220 yet. The external references above still apply.