CVE-2023-49462Public exploitNetwork attack vector

Application crash via unchecked EXIF read

Published Dec 7, 2023 · Updated Nov 26, 2024

Out-of-bounds read in libheif 1.17.5 allows remote attackers to crash an application when it converts a crafted HEIF image. During PNG conversion, the find_exif_tag path calls read16 on crafted EXIF data, and the helper reads beyond the supplied metadata buffer. An application must process the file; the demonstrated consequence is a process crash, with no public evidence of code execution or data disclosure.

CVSS severity8.8
High
EPSS probability0.80%
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 read in libheif 1.17.5 allows remote attackers to crash an application when it converts a crafted HEIF image. During PNG conversion, the find_exif_tag path calls read16 on crafted EXIF data, and the helper reads beyond the supplied metadata buffer. An application must process the file; the demonstrated consequence is a process crash, with no public evidence of code execution or data disclosure.

The record

CVE
CVE-2023-49462
Published
Dec 7, 2023
Updated
Nov 26, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 26, 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

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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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