CVE-2020-35531Public exploit

Application crash via unchecked X3F row offset

Published Sep 1, 2022 · Updated Aug 4, 2024

Out-of-bounds read in LibRaw allows local users to crash a consuming application when it decodes a crafted X3F image file. The X3F Huffman row decoder passes an unchecked row offset to set_bit_state, allowing get_bit to read beyond the image-data buffer. A user or application must open and decode the malicious file; the demonstrated consequence is an access-violation crash, not data disclosure or code execution.

CVSS severity5.5
Medium
EPSS probability0.30%
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 read in LibRaw allows local users to crash a consuming application when it decodes a crafted X3F image file. The X3F Huffman row decoder passes an unchecked row offset to set_bit_state, allowing get_bit to read beyond the image-data buffer. A user or application must open and decode the malicious file; the demonstrated consequence is an access-violation crash, not data disclosure or code execution.

The record

CVE
CVE-2020-35531
Published
Sep 1, 2022
Updated
Aug 4, 2024
Vendor
LibRaw LLC
Product
LibRaw
Classifications
CWE-125, CWE-125, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 1, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=LibRaw 0.21-Beta1, LibRaw 0.20.2, LibRaw 0.20.1, LibRaw 0.20.0, LibRaw 0.20-RC2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

LibRaw LLC · LibRawversion=LibRaw 0.21-Beta1, LibRaw 0.20.2, LibRaw 0.20.1, LibRaw 0.20.0, LibRaw 0.20-RC2

Published CVSS scores

5.5NVDCVSS: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.

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

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-125Out-of-bounds Read
CWE-125Out-of-bounds Read
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

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