MEDIUMCVSS v3.1 6.1Vulnerability
CVE-2026-120456
L-SMASH through 2.14.5 contains a heap out-of-bounds write vulnerability in isom_read_hdlr() and isom_read_dref_entry() in core/read.c triggered by oversized box sizes. Attackers can supply crafted MP4 or MOV files declaring hdlr or url box sizes larger than remaining data, stalling the stream position and corrupting heap memory to crash applications.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-02T16:55:11.069321+00:00
- Cvss severity
- MEDIUM
- Cvss score
- 6.1
- Retrieved at
- 2026-11-02T16:56:00+00:00
- Score
- 6.1
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-120456
- Cvss vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
- First seen by Signal
- 2026-11-02T16:50:29+00:00
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
- Published at
- 2026-11-02T15:17:29.293
- Last modified
- 2026-11-02T15:17:29.450
Related Entities (1)
HAS_WEAKNESS (1)
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