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UK Cyber Defence
VulnerabilityAwaiting Analysis

CVE-2025-52290

A NULL pointer dereference in the avpriv_h264_has_num_reorder_frames function of Ffmpeg version N-119856-gbe46370941 allows attackers to cause a Denial of Service (DoS) via processing a crafted media file.

HIGH 7.5EPSS 0.58%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A NULL pointer dereference in the avpriv_h264_has_num_reorder_frames function of Ffmpeg version N-119856-gbe46370941 allows attackers to cause a Denial of Service (DoS) via processing a crafted media file.

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
0.58% probability · 47th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-400
Source
cve@mitre.org
EPSS trend
0%3%5%20 October 2026: 0.42%26 October 2026: 0.58%20 October 202626 October 2026

EPSS moved from 0.4% on 20 October 2026 to 0.6% on 26 October 2026.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.