MEDIUMCVSS 6.5Vulnerability
CVE-2026-77220
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.
Properties
- severity
- MEDIUM
- cvss_severity
- MEDIUM
- cvss_score
- 6.5
- retrieved_at
- 2026-09-25T15:10:03+00:00
- score
- 6.5
- last_source
- NVD
- cve_id
- CVE-2026-77220
- cvss_vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- signal_observed_at
- 2026-09-25T15:10:03+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- published_at
- 2026-08-21T21:17:06.737
- last_modified
- 2026-09-24T20:43:32.537
Related Entities (2)
DESCRIBED_BY (1)
→[Source]NVD
HAS_WEAKNESS (1)
→[Weakness]Expired Pointer Dereference
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