Answer in brief
CVE-2023-6277 records a Medium severity (CVSS 6.5) vulnerability in Libtiff: out-of-memory in tiffopen via a craft file. The current sources do not mark it as known exploited. The current feed maps Red Hat/compat-libtiff3 (generic), Red Hat/libtiff (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Red Hat/compat-libtiff3 (generic), Red Hat/libtiff (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Red Hat/compat-libtiff3generic | * | Not reported |
| Red Hat/libtiffgeneric | * | Not reported |
Published upstream
Nov 24, 2023
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
An out-of-memory flaw was found in libtiff. Passing a crafted tiff file to TIFFOpen() API may allow a remote attacker to cause a denial of service via a craft input with size smaller than 379 KB.
Quoted source text, attributed separately from HOL analysis.