CVE-2023-46363Public exploit

Process crash via invalid image read

Published Nov 8, 2023 · Updated Sep 4, 2024

Denial of service in jbig2enc 0.28 allows local users to crash the encoder by processing a crafted image in symbol mode. The jbig2_add_page path passes the crafted one-bit image into Leptonica component analysis, where pixSetPadBits performs an invalid read and raises SIGSEGV. Exploitation requires a user or consuming workflow to invoke the command-line encoder on attacker-controlled input; the demonstrated consequence is process termination.

CVSS severity5.5
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in jbig2enc 0.28 allows local users to crash the encoder by processing a crafted image in symbol mode. The jbig2_add_page path passes the crafted one-bit image into Leptonica component analysis, where pixSetPadBits performs an invalid read and raises SIGSEGV. Exploitation requires a user or consuming workflow to invoke the command-line encoder on attacker-controlled input; the demonstrated consequence is process termination.

The record

CVE
CVE-2023-46363
Published
Nov 8, 2023
Updated
Sep 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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 vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1204.002User Execution: Malicious File

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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