How severe is CVE-2023-49464?

CVE-2023-49464 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-49464 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-49464?

CVE-2023-49464 affects Struktur Libheif. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-49464?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-49464 published?

CVE-2023-49464 was published on 2023-12-07 and last updated on 2026-06-17.

CVE-2023-49464

CVE-2023-49464 is a high-severity vulnerability in Struktur Libheif with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Struktur Libheif
Published: 2023-12-07
Last modified: 2026-06-17

Description

libheif v1.17.5 was discovered to contain a segmentation violation via the function UncompressedImageCodec::get_luma_bits_per_pixel_from_configuration_unci.

Frequently asked questions

What is CVE-2023-49464?: libheif v1.17.5 was discovered to contain a segmentation violation via the function UncompressedImageCodec::get_luma_bits_per_pixel_from_configuration_unci.
How severe is CVE-2023-49464?: CVE-2023-49464 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-49464 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-49464?: CVE-2023-49464 affects Struktur Libheif. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-49464?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-49464 published?: CVE-2023-49464 was published on 2023-12-07 and last updated on 2026-06-17.

References

https://github.com/strukturag/libheif/issues/1044

Affected products (1)

cpe:2.3:a:struktur:libheif:1.17.5:*:*:*:*:*:*:*

More vulnerabilities in Struktur Libheif

CVE-2026-32740 — High (CVSS 8.8): libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and prior contain a heap-buffer-overflow…
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CVE-2023-49462 — High (CVSS 8.8): libheif v1.17.5 was discovered to contain a segmentation violation via the component /libheif/exif.cc.
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