CVE Intelligence
High Memory corruption exploit reference

CVE-2023-52356 — Libtiff: segment fault in libtiff in tiffreadrgbatileext() leading to denial of service

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.

Published Jan 25, 2024 · Updated Oct 28, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: redhat

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 2.5% (30-day exploitation probability)+13
  • Technical severity (high)+6
  • CISA SSVC: exploitation "poc"+5
  • Automatable exploitation (SSVC)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
2.51%
ahead of 85% of scored CVEs · Oct 30, 2026
Affects
Apple
Ipados and 21 more
CVSS base
7.5
High · 4 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
Proof of concept
none · proof-of-concept · active
Automatable
Yes
can an attacker script the kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

  • Documented patch — gitlab.com (NIST National Vulnerability Database)
  • Documented patch — gitlab.com (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Apple Ipados, Apple Iphone Os, Apple Macos…).
  2. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
  3. Apply the fixed version or the patch documented under Remediation.
  4. Search available logs for exploit probes matching the vulnerability class (memory corruption), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Apple Ipados < 16.7.9≥ 17.0 and < 17.6 Vulnerable NIST National Vulnerability Database
Apple Iphone Os < 16.7.9≥ 17.0 and < 17.6 Vulnerable NIST National Vulnerability Database
Apple Macos < 12.7.6≥ 13.0 and < 13.6.8≥ 14.0 and < 14.6 Vulnerable NIST National Vulnerability Database
Apple Tvos < 17.6 Vulnerable NIST National Vulnerability Database
Apple Visionos < 1.3 Vulnerable NIST National Vulnerability Database
Apple Watchos < 10.6 Vulnerable NIST National Vulnerability Database
Debian Debian Linux version 10.0version 11.0 Vulnerable NIST National Vulnerability Database
Libtiff Libtiff < 4.6.0 Vulnerable NIST National Vulnerability Database
Red Hat Ai Inference Server ≥ 3.2.0 and < 3.2.2version 3.3.0 Vulnerable NIST National Vulnerability Database
Red Hat Codeready Linux Builder version 9.0version 10.0version 8.0 Vulnerable NIST National Vulnerability Database
Red Hat Codeready Linux Builder Eus version 10.0version 9.6 Vulnerable NIST National Vulnerability Database
Red Hat Discovery version 2.0 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux version 6.0version 10.0version 9.0version 8.0version 7.0 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux Eus version 10.0version 9.6 Vulnerable NIST National Vulnerability Database
Red Hat Red Hat AI Inference Server 3.2 versions not specified by the source Vulnerable CVE Program (cve.org) e CISA ADP
Red Hat Red Hat AI Inference Server 3.3 versions not specified by the source Vulnerable CVE Program (cve.org) e CISA ADP
Red Hat Red Hat Discovery 2 versions not specified by the source Vulnerable CVE Program (cve.org) e CISA ADP
Red Hat Red Hat Enterprise Linux 10 versions not specified by the source Vulnerable CVE Program (cve.org) e CISA ADP
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support versions not specified by the source Vulnerable CVE Program (cve.org) e CISA ADP
Red Hat Red Hat Enterprise Linux 8 versions not specified by the source Vulnerable CVE Program (cve.org) e CISA ADP
Red Hat Red Hat Enterprise Linux 9 versions not specified by the source Vulnerable CVE Program (cve.org) e CISA ADP
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support versions not specified by the source Vulnerable CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
7.5 CVSS 3.1 High 3.9 3.6 secalert@redhat.com via NIST National Vulnerability Database
7.5 CVSS 3.1 High 3.9 3.6 nvd@nist.gov via NIST National Vulnerability Database
7.5 CVSS 3.1 High — — GitHub, Inc. via GitHub Security Advisories
7.5 CVSS 3.1 High — — redhat via CVE Program (cve.org) e CISA ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (score shown at the top: nvd@nist.gov)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-787 · Out-of-bounds Write

Other CVEs with this weakness →

EPSS over time FIRST

Oct 28, 2026 → Oct 30, 2026 · 3 reading(s) · max 2.51%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
  • Correlate service crashes/restarts with inbound traffic; repeated crashes may indicate attempts.
web/proxy/WAF logsnetwork IDS/IPSendpoint telemetry (EDR)crash dumps

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · red hat/red hat enterprise linux 10, red hat/red hat enterprise linux 10.0 extended update support, red hat/red hat ente
    Oct 28, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 28, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 28, 2026
  • Fix documented
    Oct 28, 2026 · NIST National Vulnerability Database
  • CVSS changed · 7.5
    Oct 28, 2026 · NIST National Vulnerability Database
  • Source status changed · → Analyzed
    Oct 28, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 28, 2026 · NIST National Vulnerability Database
  • 2024
  • CVE published
    Jan 25, 2024 · redhat

Source activity

Repeated readings are counted rather than listed.

  • 1× References added · Oct 28, 2026 – Oct 28, 2026
  • 1× Official description updated · Oct 28, 2026 – Oct 28, 2026

References

41 on the record

Elsewhere on this site

Apple
every CVE for this vendor
Memory corruption
same class
CWE-787
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-119842 Gst-plugins-base: gst-plugins-base: null-pointer dereference in mdvdsub subtitle parser via missing closing-brace check 11h
  • CVE-2026-119727 Gst-plugins-bad: gst-plugins-bad: h.265 sps scc palette predictor array overflow via integer underflow in bounds computation 11h
  • CVE-2026-119728 Gst-plugins-bad: gst-plugins-bad: null pointer dereference in h.264 mvc sps cleanup during parse failure 11h
  • CVE-2026-119729 Gst-plugins-base: gst-plugins-bad: gst-plugins-base/gst-plugins-bad: integer overflow in av1 leb128 parser allows denial of service 11h
  • CVE-2026-119777 Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: stack buffer overflow in h.266/vvc parser 12h
  • CVE-2026-119528 Gimp: gimp: stack buffer overflow in psd image resource header loader 16h

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2023-52356 is "Libtiff: segment fault in libtiff in tiffreadrgbatileext() leading to denial of service", rated High. It affects Ipados (Apple); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.5 describes technical severity. EPSS 2.51% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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