How severe is CVE-2021-40264?

CVE-2021-40264 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-40264 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40264?

CVE-2021-40264 affects Freeimage Project Freeimage. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40264?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-40264 published?

CVE-2021-40264 was published on 2023-08-22 and last updated on 2026-06-17.

CVE-2021-40264

CVE-2021-40264 is a medium-severity vulnerability in Freeimage Project Freeimage with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Freeimage Project Freeimage
Published: 2023-08-22
Last modified: 2026-06-17

Description

NULL pointer dereference vulnerability in FreeImage before 1.18.0 via the FreeImage_CloneTag function inFreeImageTag.cpp.

Frequently asked questions

What is CVE-2021-40264?: NULL pointer dereference vulnerability in FreeImage before 1.18.0 via the FreeImage_CloneTag function inFreeImageTag.cpp.
How severe is CVE-2021-40264?: CVE-2021-40264 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-40264 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40264?: CVE-2021-40264 affects Freeimage Project Freeimage. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40264?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40264 published?: CVE-2021-40264 was published on 2023-08-22 and last updated on 2026-06-17.

References

https://sourceforge.net/p/freeimage/bugs/335/

Affected products (1)

cpe:2.3:a:freeimage_project:freeimage:*:*:*:*:*:*:*:*

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CVE-2021-40263 — High (CVSS 8.8): A heap overflow vulnerability in FreeImage 1.18.0 via the ofLoad function in PluginTIFF.cpp.

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