CVE-2022-38529

Memory corruption via truncated RLE input

Published Sep 6, 2022 · Updated Aug 3, 2024

Heap-buffer overflow in tinyexr commit 0647fb3 allows context-dependent attackers to trigger memory corruption via crafted EXR data. The rleUncompress repeat-run branch subtracts two bytes from the remaining input length but fails to reject a negative result before dereferencing the repeat byte. Exploitation requires an application embedding the library to process attacker-controlled RLE-compressed image data with user interaction.

CVSS severity7.8
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-buffer overflow in tinyexr commit 0647fb3 allows context-dependent attackers to trigger memory corruption via crafted EXR data. The rleUncompress repeat-run branch subtracts two bytes from the remaining input length but fails to reject a negative result before dereferencing the repeat byte. Exploitation requires an application embedding the library to process attacker-controlled RLE-compressed image data with user interaction.

The record

CVE
CVE-2022-38529
Published
Sep 6, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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