CVE-2023-52356: A segment fault (SEGV) flaw was found in libtiff that could be triggered by passing a crafted tiff file to the

Q: How do I fix CVE-2023-52356?

debian linux: mitigate or apply the listed mitigation; ipados: upgrade to 16.7.9, 17.6; iphone os: upgrade to 16.7.9, 17.6. Exact commands for each OS are on this page.

Q: Is CVE-2023-52356 being exploited?

CVE-2023-52356 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-52356 affect?

CVE-2023-52356 affects debian linux, ipados, iphone os. Severity is high (CVSS 7.5). A segment fault (SEGV) flaw was found in libtiff that could be triggered by passing a crafted tiff file to the TIFFReadRGBATileExt() API. This flaw allows a remote attacker to cause a heap-buffer overflow, leading to a denial of service.

Q: How urgent is CVE-2023-52356?

Priority 62/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action; On your watchlist

This week

HIGH 7.5REMOTEWATCHLISTMITIGATEUPGRADEUPGRADE

CVE-2023-52356 is a high-severity flaw (CVSS 7.5) affecting debian linux, ipados, iphone os. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A segment fault (SEGV) flaw was found in libtiff that could be triggered by passing a crafted tiff file to the TIFFReadRGBATileExt() API. This flaw allows a remote attacker to cause a heap-buffer overflow, leading to a denial of service.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.2% (top 18%)
CISA exploited list	No
Weakness	CWE-122, CWE-787
Published	2024-01-25
Last modified	2026-10-28

Publisher (CNA): Red Hat, Inc. · Vendor: apple · debian

Last updated 2026-10-28 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-01-25 20:15 UTCPublished CVE record published
2026-10-28 19:06 UTCUpdated Record last modified

debian debian linux MITIGATE

Affected: 10.0 · 11.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

apple ipados UPGRADE

Affected: < 16.7.9 · >= 17.0 and < 17.6

Fixed in: 16.7.9, 17.6

Safe to downgrade to: a release before 17.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

apple iphone os UPGRADE

Affected: < 16.7.9 · >= 17.0 and < 17.6

Fixed in: 16.7.9, 17.6

Safe to downgrade to: a release before 17.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

apple macos UPGRADE

Affected: < 12.7.6 · >= 13.0 and < 13.6.8 · >= 14.0 and < 14.6

Fixed in: 12.7.6, 13.6.8, 14.6

Safe to downgrade to: a release before 13.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

apple tvos UPGRADE

Affected: < 17.6

Fixed in: 17.6

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

apple visionos UPGRADE

Affected: < 1.3

Fixed in: 1.3

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · amule · FIXED · 3.2.0-1.fc46 · FEDORA-2026-4feb2647b0 · source

sudo dnf upgrade --advisory=FEDORA-2026-4feb2647b0

Fedora ELN · mysql9.7 · FIXED · 9.7.4-3.eln159 · FEDORA-2026-ea1c50e49b · source

sudo dnf upgrade --advisory=FEDORA-2026-ea1c50e49b

Ubuntu 22.04 · tiff · FIXED · 4.3.0-6ubuntu0.8

sudo apt update && sudo apt install --only-upgrade tiff dpkg --compare-versions "$(dpkg-query -W -f='${Version}' tiff)" ge "4.3.0-6ubuntu0.8" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 20.04 · tiff · FIXED · 4.1.0+git191117-2ubuntu0.20.04.12

sudo apt update && sudo apt install --only-upgrade tiff dpkg --compare-versions "$(dpkg-query -W -f='${Version}' tiff)" ge "4.1.0+git191117-2ubuntu0.20.04.12" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 24.04 · tiff · FIXED · 4.5.1+git230720-4ubuntu1

sudo apt update && sudo apt install --only-upgrade tiff dpkg --compare-versions "$(dpkg-query -W -f='${Version}' tiff)" ge "4.5.1+git230720-4ubuntu1" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 24.10 · tiff · FIXED · 4.5.1+git230720-4ubuntu1

sudo apt update && sudo apt install --only-upgrade tiff dpkg --compare-versions "$(dpkg-query -W -f='${Version}' tiff)" ge "4.5.1+git230720-4ubuntu1" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 25.04 · tiff · FIXED · 4.5.1+git230720-4ubuntu1

sudo apt update && sudo apt install --only-upgrade tiff dpkg --compare-versions "$(dpkg-query -W -f='${Version}' tiff)" ge "4.5.1+git230720-4ubuntu1" && echo PATCHED || echo STILL-VULNERABLE

Debian 12 · tiff · FIXED · 4.5.0-6+deb12u2

sudo apt update && sudo apt install --only-upgrade tiff dpkg --compare-versions "$(dpkg-query -W -f='${Version}' tiff)" ge "4.5.0-6+deb12u2" && echo PATCHED || echo STILL-VULNERABLE

Debian 13 · tiff · FIXED · 4.5.1+git230720-4

sudo apt update && sudo apt install --only-upgrade tiff dpkg --compare-versions "$(dpkg-query -W -f='${Version}' tiff)" ge "4.5.1+git230720-4" && echo PATCHED || echo STILL-VULNERABLE

RHEL 10 · libtiff · FIXED · libtiff-4.6.0-6.el10_1.2

sudo dnf upgrade --advisory=RHSA-2026:7081 rpm -q libtiff

RHEL 10.0 Extended Update Support · libtiff · FIXED · libtiff-4.6.0-6.el10_0.2

sudo dnf upgrade --advisory=RHSA-2026:7304 rpm -q libtiff

RHEL 8 · libtiff · FIXED · libtiff-4.0.9-32.el8_10

sudo dnf upgrade --advisory=RHSA-2024:5079 rpm -q libtiff

RHEL 9 · libtiff · FIXED · libtiff-4.4.0-15.el9

sudo dnf upgrade --advisory=RHSA-2025:20801 rpm -q libtiff

RHEL 9.6 Extended Update Support · libtiff · FIXED · libtiff-4.4.0-13.el9_6.3

sudo dnf upgrade --advisory=RHSA-2026:5958 rpm -q libtiff

Amazon Linux 2023 · see advisory · FIXED · ALAS2023-2024-525 · source

sudo dnf update --advisory=ALAS2023-2024-525

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: yardenbenita/CVE-2023-52356-libtiff-analysis (0 stars)
Write-up: gitlab.com/libtiff/libtiff/-/issues/622

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-52356?

debian linux: mitigate or apply the listed mitigation; ipados: upgrade to 16.7.9, 17.6; iphone os: upgrade to 16.7.9, 17.6. Exact commands for each OS are on this page.

Is CVE-2023-52356 being exploited?

CVE-2023-52356 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-52356 affect?

CVE-2023-52356 affects debian linux, ipados, iphone os. Severity is high (CVSS 7.5). A segment fault (SEGV) flaw was found in libtiff that could be triggered by passing a crafted tiff file to the TIFFReadRGBATileExt() API. This flaw allows a remote attacker to cause a heap-buffer overflow, leading to a denial of service.

How urgent is CVE-2023-52356?

Priority 62/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Debian vulnerabilities · macOS vulnerabilities · iPadOS vulnerabilities · tvOS vulnerabilities

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References

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