CVE-2023-49468Public exploit

Decoder crash via coding-unit table over-read

Published Dec 7, 2023 · Updated Aug 28, 2024

Global buffer overflow in Struktur AG libde265 1.0.14 allows context-dependent attackers to crash decoders with a crafted H.265 bitstream. During coding-unit parsing, read_coding_unit reads one byte at an address 14 bytes beyond the 16-byte ctxIdxMap table. A user must decode the supplied stream; the public reproducer demonstrates an AddressSanitizer-detected abort, while code execution is not established.

CVSS severity8.8
High
EPSS probability0.87%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Global buffer overflow in Struktur AG libde265 1.0.14 allows context-dependent attackers to crash decoders with a crafted H.265 bitstream. During coding-unit parsing, read_coding_unit reads one byte at an address 14 bytes beyond the 16-byte ctxIdxMap table. A user must decode the supplied stream; the public reproducer demonstrates an AddressSanitizer-detected abort, while code execution is not established.

The record

CVE
CVE-2023-49468
Published
Dec 7, 2023
Updated
Aug 28, 2024
Vendor
Struktur AG
Product
libde265
Classifications
CWE-787, CWE-120, T1203
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2024Record 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=1.0.14

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Struktur AG · libde265version=1.0.14

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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