CVE-2026-33164

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.0.17)"}}], "enrichment": {"confidence": 94.0, "confidence_source": "matching", "scores": [{"score": 94.0, "source": "matching"}]}, "original": {"product": "libde265", "source": "cna", "vendor": "strukturag"}, "product": "libde265", "vendor": "struktur"}], "analysis": {"en": {"generated_at": "2026-03-24T03:46:40.060844+00:00", "value": {"mitigation_remediation": ["Update libde265 to version\u202f1.0.17 or later", "If an upgrade cannot be applied immediately, block or sandbox the processing of untrusted H.265 streams until a patch is available", "Monitor the application for segmentation faults or unexpected shutdowns that may indicate exploitation"], "summary": {"action": "Immediate Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "All installations of strukturag's libde265 released before version\u202f1.0.17 are affected. The library is employed in many applications that decode H.265/HEVC content, so any component embedding the vulnerable library is at risk. The advisory confirms that the issue was fixed in version\u202f1.0.17 and subsequent releases.", "description_and_impact": "The vulnerability is a NULL pointer dereference within libde265's handling of the Picture Parameter Set when processing an H.265 NAL unit. A malformed PPS NAL unit triggers a segmentation fault during the set_derived_values() call, causing the decoder process to terminate. The weakness is classified as an out\u2011of-bounds memory access and a null pointer dereference, consistent with the assigned CWEs. The resulting crash undermines availability of any software that relies on the library to decode video streams.", "risk_and_exploitability": "The CVSS score of 8.7 indicates high severity, while an EPSS score of less than 1% implies a relatively low likelihood of exploitation at present. The vulnerability is not listed in CISA\u2019s Known Exploited Vulnerabilities catalog. If an application decodes untrusted H.265 data, an attacker could craft a malformed PPS NAL unit to trigger the crash and cause a denial of service. The likely attack vector is inferred to be remote via externally supplied media, but explicit details are not provided in the advisory."}}}}, "created": "2026-03-23T09:52:39.452184+00:00", "updated": "2026-03-25T14:34:33.810363+00:00", "vendors": ["struktur", "struktur$PRODUCT$libde265"]}