CVE-2024-11403Network attack vector

Out-of-bounds write and disclosure via undersized Huffman table

Published Nov 25, 2024 · Updated Nov 25, 2024

Out-of-bounds access in libjxl before 0.11.1 allows attackers to write outside a buffer or disclose memory through crafted JPEG input. The JPEG Huffman decoders reserve 758 lookup-table entries under a complete-code assumption, although incomplete codes can consume nearly 1,024 entries. Reachability requires JxlEncoderAddJPEGFrame to recompress untrusted JPEG data; the jpegli variant can read uninitialized memory or function addresses.

CVSS severity6.9
Medium
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Out-of-bounds access in libjxl before 0.11.1 allows attackers to write outside a buffer or disclose memory through crafted JPEG input. The JPEG Huffman decoders reserve 758 lookup-table entries under a complete-code assumption, although incomplete codes can consume nearly 1,024 entries. Reachability requires JxlEncoderAddJPEGFrame to recompress untrusted JPEG data; the jpegli variant can read uninitialized memory or function addresses.

The record

CVE
CVE-2024-11403
Published
Nov 25, 2024
Updated
Nov 25, 2024
Vendor
Go standard library
Product
libjxl
Classifications
CWE-125, CWE-787, CAPEC-540
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 25, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 25, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.10.0-2 <9cc451b91b74ba470fd72bd48c121e9f33d24c99
  2. Affected versionversion=0.11.0 <9cc451b91b74ba470fd72bd48c121e9f33d24c99
  3. Affected versionversion=0.7.0-1 <9cc451b91b74ba470fd72bd48c121e9f33d24c99
  4. Affected versionversion=0.8.0-3 <9cc451b91b74ba470fd72bd48c121e9f33d24c99
  5. Affected versionversion=0.9.0-3 <9cc451b91b74ba470fd72bd48c121e9f33d24c99

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Go standard library · libjxlversion=0.10.0-2 <9cc451b91b74ba470fd72bd48c121e9f33d24c99; version=0.11.0 <9cc451b91b74ba470fd72bd48c121e9f33d24c99; version=0.7.0-1 <9cc451b91b74ba470fd72bd48c121e9f33d24c99; version=0.8.0-3 <9cc451b91b74ba470fd72bd48c121e9f33d24c99; version=0.9.0-3 <9cc451b91b74ba470fd72bd48c121e9f33d24c99

Published CVSS scores

6.9Google Inc.CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CWE-787Out-of-bounds Write
CAPEC-540Overread Buffers

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo