CVE-2019-8906 — Out-of-bounds Read in Apple Iphone Os

Triage

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

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.

Remediation

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

• Documented patch — github.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 Iphone Os, Apple Mac Os X, Apple Tvos…).
2. Apply the fixed version or the patch documented under Remediation.
3. 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.

Attack characteristics

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

Every base score collected

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

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-125 · Out-of-bounds Read

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.49%

Detection

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

• Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
• Correlate service crashes/restarts with inbound traffic; repeated crashes may indicate attempts.

Timeline

What happened to this CVE, newest first.

• 2026
• SSVC assessment updated
  Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
• Record published
  Oct 13, 2026
• Fix documented
  Oct 13, 2026 · NIST National Vulnerability Database
• CVSS changed · 4.4
  Oct 13, 2026 · NIST National Vulnerability Database
• Source status changed · → Modified
  Oct 13, 2026 · NIST National Vulnerability Database
• Record created in this database
  Oct 13, 2026 · NIST National Vulnerability Database
• 2019
• CVE published
  Feb 18, 2019 · mitre

Source activity

Repeated readings are counted rather than listed.

• 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

9 on the record

• github.com/file/file/commit/2858eaf99f6cc5aae129bcbf1e24ad160240185f
  Patch, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
• lists.opensuse.org/opensuse-security-announce/2019-03/msg00027.html
  Mailing List, Third Party Advisory, vendor-advisory, x_refsource_SUSE, NIST National Vulnerability Database
• support.apple.com/kb/HT209599
  Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database
• support.apple.com/kb/HT209601
  Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database
• support.apple.com/kb/HT209602
  Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database
• bugs.astron.com/view.php
  Exploit, Issue Tracking, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
• support.apple.com/kb/HT209600
  Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database
• usn.ubuntu.com/3911-1/
  Third Party Advisory, vendor-advisory, x_refsource_UBUNTU, NIST National Vulnerability Database
• lists.opensuse.org/opensuse-security-announce/2019-04/msg00053.html
  Mailing List, Third Party Advisory, vendor-advisory, x_refsource_SUSE, NIST National Vulnerability Database

Elsewhere on this site

Related CVEs (same products)

• High CVE-2026-86950 Apple Multiple Products Out-of-Bounds Write Vulnerability KEV 17d
• Medium CVE-2026-86924 Improper Input Validation in Apple Ipados Sep 14, 2026
• Medium CVE-2026-86905 Improper Access Control in Apple Ipados Sep 14, 2026
• High CVE-2026-86904 A privacy issue was addressed with improved state management. This issue is fixed in iOS… Sep 14, 2026
• Medium CVE-2026-86903 Out-of-bounds Read in Apple Ipados Sep 14, 2026
• Medium CVE-2026-86892 Allocation of Resources Without Limits or Throttling in Apple Ipados Sep 14, 2026

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-2019-8906 is "Out-of-bounds Read in Apple Iphone Os", rated Medium. It affects Iphone Os (Apple); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 4.4 describes technical severity. EPSS 0.49% 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.

Comments

Moderated technical discussion. Read the community guidelines.

No comments yet.

Sign in or create an account to comment and suggest corrections.