CVE-2020-35534Public exploit

Application crash via uninitialized CR3 subband pointer

Published Sep 1, 2022 · Updated Aug 4, 2024

Memory corruption in LibRaw 0.20-RC2 through 0.20.2 and 0.21-Beta1 allows attackers to crash applications via crafted CR3 files. crxReadImageHeaders allocates the tile and subband table without zero-initializing it, so cleanup dereferences an uninitialized bandParam pointer in crxFreeSubbandData. Context-dependent attackers must cause a LibRaw-consuming application to process the malformed file; the demonstrated consequence is an access-violation crash.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in LibRaw 0.20-RC2 through 0.20.2 and 0.21-Beta1 allows attackers to crash applications via crafted CR3 files. crxReadImageHeaders allocates the tile and subband table without zero-initializing it, so cleanup dereferences an uninitialized bandParam pointer in crxFreeSubbandData. Context-dependent attackers must cause a LibRaw-consuming application to process the malformed file; the demonstrated consequence is an access-violation crash.

The record

CVE
CVE-2020-35534
Published
Sep 1, 2022
Updated
Aug 4, 2024
Vendor
LibRaw LLC
Product
LibRaw
Classifications
CWE-770, CWE-400, T1499
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

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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=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-770Allocation of Resources Without Limits or Throttling
CWE-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

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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