CVE-2026-49295Network attack vector

Service interruption via predicted RPS array overflow

Published Jun 19, 2026 · Updated Jun 19, 2026

Out-of-bounds write in libde265 before 1.0.20 allows remote attackers to interrupt decoding via a crafted H.265 bitstream. decoder_context::process_reference_picture_set() validates separate reference lists but not their combined size, allowing predicted entries to write index 16 of the 16-entry PocStFoll array. Processing attacker-supplied media is required; the write can corrupt decoder memory and crash the consuming process.

CVSS severity7.1
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in libde265 before 1.0.20 allows remote attackers to interrupt decoding via a crafted H.265 bitstream. decoder_context::process_reference_picture_set() validates separate reference lists but not their combined size, allowing predicted entries to write index 16 of the 16-entry PocStFoll array. Processing attacker-supplied media is required; the write can corrupt decoder memory and crash the consuming process.

The record

CVE
CVE-2026-49295
Published
Jun 19, 2026
Updated
Jun 19, 2026
Vendor
Struktur AG
Product
libde265
Classifications
CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.0.20

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Struktur AG · libde265version=< 1.0.20

Published CVSS scores

7.1GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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