CVE-2026-49346

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 87% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.1
EG Score
7.1(medium)
EPSS
13.5%
KEV
Not listed

Published

June 19, 2026

Last Modified

June 26, 2026

Advisory Details (2)

Auto-updated Jun 19, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
github Patch Available🟡 PoC Available

Heap buffer overflow in de265_image_get_buffer via SPS dimension integer overflow · Advisory · strukturag/libde265 · GitHub

https://github.com/strukturag/libde265/security/advisories/GHSA-vv8h-932h-7r86
github_commit Patch Available

commit 8a1b5cf212f7 (strukturag/libde265)

Patch available: strukturag/libde265 v1.1.0 (contains commit 8a1b5cf212f7)

https://github.com/strukturag/libde265/commit/8a1b5cf212f78e1c77cb46eb5d56e492a9336eb8

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 19× in last 7d / 74× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-15 19:06 UTCEG score recompute
  2. 2026-07-15 16:57 UTCEPSS rescore
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  1. 2026-07-06 16:27 UTCEPSS rescore
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  17. 2026-06-30 23:22 UTCEPSS rescore
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  21. 2026-06-29 14:06 UTCEPSS rescore
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  23. 2026-06-29 02:49 UTCEG score recompute
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  31. 2026-06-26 23:55 UTCEG score recompute
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  34. 2026-06-25 13:49 UTCEPSS rescore
  35. 2026-06-25 04:59 UTCEG score recompute
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  39. 2026-06-23 21:33 UTCEPSS rescore
  40. 2026-06-23 21:33 UTCEPSS rescore
  41. 2026-06-23 14:49 UTCEG score recompute
  42. 2026-06-23 02:06 UTCEG score recompute
  43. 2026-06-22 13:22 UTCEG score recompute
  44. 2026-06-22 00:38 UTCEG score recompute
  45. 2026-06-21 11:52 UTCEG score recompute
  46. 2026-06-20 23:09 UTCEG score recompute
  47. 2026-06-20 10:24 UTCEG score recompute
  48. 2026-06-19 21:38 UTCEG score recompute
  49. 2026-06-19 21:37 UTCNVD updatefirst tracked

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Frequently asked(5)

What is CVE-2026-49346?
CVE-2026-49346 is a high vulnerability published on June 19, 2026. 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 de265imagegetbuffer() (libde265/image.cc:128). The overflow wraps the plane allocation size to a…
When was CVE-2026-49346 disclosed?
CVE-2026-49346 was first published in the National Vulnerability Database on June 19, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49346 actively exploited?
CVE-2026-49346 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-49346?
CVE-2026-49346 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-49346?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49346, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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