Vulnerability details
CVE-2026-49346
strukturag libde265
libde265 has a heap buffer overflow in de265_image_get_buffer via SPS dimension integer overflow
CVSS 3.1
7.1High
Official description
libde265 is an open source implementation of the h.265 video codec. Prior to version 1.1.0, a crafted H.265 bitstream with large SPS dimensions and 16-bit bit depth causes a signed integer overflow in `de265_image_get_buffer()` (`libde265/image.cc:128`). The overflow wraps the plane allocation size to a small value (~1 KB), but the subsequent `fill_image()` call computes the real size using `size_t`, writing ~4 GB into the undersized heap buffer. Version 1.1.0 patches the issue.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.1High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| strukturag | libde265 | < 1.1.0 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2026-06-19
- Last updated
- 2026-06-22
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.37%
Probability of exploitation in 30 days
31.2%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-190Integer Overflow or Wraparound