CVE-2023-51105

Reported crash via BMP RLE4 divide-by-zero

Published Dec 26, 2023 · Updated Aug 2, 2024

The CVE describes a divide-by-zero in MuPDF 1.23.4 that crashes the application during RLE4-compressed BMP processing. The report attributes the fault to bmp_decompress_rle4 in load-bmp.c but provides neither a triggering file nor the exact division expression. Upstream analysis found that bmp_read_image already rejects nonpositive dimensions before decompression and added only redundant assertions, leaving the claimed crash unverified.

CVSS severity7.5
High
EPSS probability0.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

The CVE describes a divide-by-zero in MuPDF 1.23.4 that crashes the application during RLE4-compressed BMP processing. The report attributes the fault to bmp_decompress_rle4 in load-bmp.c but provides neither a triggering file nor the exact division expression. Upstream analysis found that bmp_read_image already rejects nonpositive dimensions before decompression and added only redundant assertions, leaving the claimed crash unverified.

The record

CVE
CVE-2023-51105
Published
Dec 26, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-369
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 26, 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 vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-369Divide By Zero

Public exploit references

No public exploit references are available in this record.

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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