CVE-2020-13440Public exploitNetwork attack vector

Application crash via unchecked BMP row writes

Published May 24, 2020 · Updated Aug 4, 2024

Out-of-bounds write in ffjpeg through 2020-02-24 allows remote attackers to crash the codec by supplying a crafted BMP file. The bmp_load function trusts header-derived dimensions when calculating the row stride and destination pointer, then reads each row without ensuring that the write remains within the allocated pixel buffer. Execution requires a user or calling application to process the crafted file; the demonstrated consequence is a SIGSEGV service interruption.

CVSS severity6.5
Medium
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in ffjpeg through 2020-02-24 allows remote attackers to crash the codec by supplying a crafted BMP file. The bmp_load function trusts header-derived dimensions when calculating the row stride and destination pointer, then reads each row without ensuring that the write remains within the allocated pixel buffer. Execution requires a user or calling application to process the crafted file; the demonstrated consequence is a SIGSEGV service interruption.

The record

CVE
CVE-2020-13440
Published
May 24, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 24, 2020CVE 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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