CVE-2024-45993Public exploitNetwork attack vector

Utility crash via unchecked color-map index

Published Sep 30, 2024 · Updated Jul 5, 2026

Heap buffer overflow in GIFLIB project giflib 5.2.2 allows remote attackers to crash gif2rgb by supplying a crafted GIF file. DumpScreen2RGB uses each decoded pixel value as an index into ColorMap->Colors without checking that it is below ColorCount. Processing malformed input in the default three-file output mode reaches the invalid palette read and terminates the utility; single-file mode does not reach this code path.

CVSS severity6.5
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in GIFLIB project giflib 5.2.2 allows remote attackers to crash gif2rgb by supplying a crafted GIF file. DumpScreen2RGB uses each decoded pixel value as an index into ColorMap->Colors without checking that it is below ColorCount. Processing malformed input in the default three-file output mode reaches the invalid palette read and terminates the utility; single-file mode does not reach this code path.

The record

CVE
CVE-2024-45993
Published
Sep 30, 2024
Updated
Jul 5, 2026
Vendor
GIFLIB project
Product
giflib
Classifications
CWE-122, CWE-787
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 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=5.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GIFLIB project · giflibversion=5.2.2

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

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-122Heap-based Buffer Overflow
CWE-787Out-of-bounds Write

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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