CVE-2026-40250
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk39th percentile - higher than 39% of all known CVEs
Summary
W wersjach 3.4.0 do 3.4.9, 3.3.0 do 3.3.9 oraz 3.2.0 do 3.2.7 biblioteki OpenEXR występuje podatność związana z obliczeniami arytmetycznymi w `internal_dwa_compressor.h:1040`, które nie uwzględniają rzutowania na `(size_t)`. To prowadzi do potencjalnego przepełnienia, które zostało naprawione w innych dekoderach przez CVE-2026-34589/34588/34544, ale ta linia została pominięta.
Risk Assessment
Organizacje korzystające z podatnych wersji OpenEXR mogą być narażone na ataki wykorzystujące przepełnienie, co może prowadzić do nieautoryzowanego dostępu lub awarii systemu.
Recommendation
Zaleca się aktualizację do wersji 3.4.10, 3.3.10 lub 3.2.8, które zawierają poprawkę eliminującą tę podatność.
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Original NVD description (English source)
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, `internal_dwa_compressor.h:1040` performs `chan->width * chan->bytes_per_element` in `int32` arithmetic without a `(size_t)` cast. This is the same overflow pattern fixed in other decoders by CVE-2026-34589/34588/34544, but this line was missed. Versions 3.4.10, 3.3.10, and 3.2.8 contain a fix that addresses `internal_dwa_compressor.h:1040`.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

