CVE-2025-26623Public exploitNetwork attack vector

Code execution via stale TiffSubIfd pointer

Published Feb 18, 2025 · Updated Feb 19, 2025

Use-after-free in TiffSubIfd in Exiv2 0.28.0 through 0.28.4 allows context-dependent attackers to execute code via a crafted image. During TiffParser::encode, TiffComponent::accept follows a raw TiffSubIfd pointer after doAddPath frees the referenced component. Exploitation requires the image to reach a metadata-writing path, such as the fixiso action, and can corrupt memory or execute code in the consuming process.

CVSS severity5.3
Medium
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in TiffSubIfd in Exiv2 0.28.0 through 0.28.4 allows context-dependent attackers to execute code via a crafted image. During TiffParser::encode, TiffComponent::accept follows a raw TiffSubIfd pointer after doAddPath frees the referenced component. Exploitation requires the image to reach a metadata-writing path, such as the fixiso action, and can corrupt memory or execute code in the consuming process.

The record

CVE
CVE-2025-26623
Published
Feb 18, 2025
Updated
Feb 19, 2025
Vendor
Exiv2
Product
Exiv2
Classifications
CWE-416, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 2025Record 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=>= 0.28.0, < 0.28.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Exiv2 · Exiv2version=>= 0.28.0, < 0.28.5

Published CVSS scores

5.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

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-416Use After Free
T1204.002Malicious File

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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