CVE-2023-1570Public exploit

Application crash via unchecked embedded-image copy

Published Mar 22, 2023 · Updated Aug 2, 2024

Heap-based buffer overflow in TinyDNG's image loader allows local users to crash an application by supplying a crafted DNG file. During embedded-image decoding, stbi__getn passes an attacker-controlled byte count to memcpy without ensuring the source buffer contains that many bytes. The file must be opened by an application built with the library; the demonstrated consequence is an out-of-bounds read followed by process termination.

CVSS severity5.5
Medium
EPSS probability0.39%
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

Heap-based buffer overflow in TinyDNG's image loader allows local users to crash an application by supplying a crafted DNG file. During embedded-image decoding, stbi__getn passes an attacker-controlled byte count to memcpy without ensuring the source buffer contains that many bytes. The file must be opened by an application built with the library; the demonstrated consequence is an out-of-bounds read followed by process termination.

The record

CVE
CVE-2023-1570
Published
Mar 22, 2023
Updated
Aug 2, 2024
Vendor
Syoyo Fujita
Product
TinyDNG
Classifications
CWE-122, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=n/a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Syoyo Fujita · TinyDNGversion=n/a

Published CVSS scores

1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
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.

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-122Heap-based Buffer Overflow
T1204.002Malicious File

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