CVE-2023-27102Public exploitNetwork attack vector

Decoder crash via unchecked PPS dereference

Published Mar 15, 2023 · Updated Aug 2, 2024

NULL pointer dereference in struktur AG libde265 1.0.11 allows remote attackers to crash a decoder via a crafted H.265 bitstream. decoder_context::process_slice_segment_header uses slice_pic_parameter_set_id to index the PPS table and dereferences the selected slot without confirming that the referenced PPS exists. The crash requires an application or user to decode the crafted stream and interrupts only that decoding process, with no reported data disclosure or modification.

CVSS severity6.5
Medium
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in struktur AG libde265 1.0.11 allows remote attackers to crash a decoder via a crafted H.265 bitstream. decoder_context::process_slice_segment_header uses slice_pic_parameter_set_id to index the PPS table and dereferences the selected slot without confirming that the referenced PPS exists. The crash requires an application or user to decode the crafted stream and interrupts only that decoding process, with no reported data disclosure or modification.

The record

CVE
CVE-2023-27102
Published
Mar 15, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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 exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1204.002Malicious File

Public exploit references

  • SEGV-POCproof of concept · demonstrated

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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