CVE-2023-42916
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An out-of-bounds read was addressed with improved input validation
rank 71 = 40 + 16 + 0 + 9 + 6
rank@v1 · act now
Someone is already using it
CISA KEV catalog · public proof-of-concept · FIRST EPSS
EPSS 0.17823 · CISA KEV listed · without this subject the record ranks 31
What it costs you if it fires
NVD CVSS base score, then the CNA's own
CVSS 6.5, from NVD · without this subject the record ranks 55
It is getting worse, not staying still
FIRST EPSS series, rescorings and bad loads removed
no persisting rise in 365 days · without this subject the record ranks 71
How much of the world it touches
NVD CPE configurations
13 products in the CPE ranges · without this subject the record ranks 62
Someone else already set the date
CISA KEV remediation due date
CISA remediation date held · without this subject the record ranks 65
$544,000 = $4.99M incident cost x 0.6121449559255632 exposure x 0.17823 likelihood
udv@v1 · unaudited · wrong for you until you say what you run
$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.
Hindsight · the state
Foresight · where to check next
This record is one instance of CWE-125, out-of-bounds read. The index holds 9766 prior instances of this class, 18 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1
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A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.
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Matches your own product list against every record this index holds, and tells you when one of them moves.
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Harm, if it fires from the vector and the weakness
Written for the ticket you're about to file.
CISA KEV & Federal Remediation Deadline from the record and CISA
The fix, and how long it's been waiting.
Exploit Status & Known PoCs a ladder, not a score
Current rung: Exploited in the wild · CISA KEV listed, 2023-12-04.
- RUNG 1Nothing observed in held sources
- RUNG 2Proof-of-concept published
- RUNG 3Exploited in the wild · CISA KEV listed2023-12-04receipt
- RUNG 4Ransomware campaign use known
Affected & Fixed Versions as published
Show all 13 published ranges
A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.
What it is stated by the CNA
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may disclose sensitive information. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1. receipt
NVD's analysis a second authority
- severity
- 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- weakness
- CWE-125
- affected versions
- apple safari < 17.1.2; apple ipados < 15.8.1; apple ipados >= 16.0 < 16.7.3; and 10 more, listed in full below
- also scored by
- 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
check it yourself support.apple.com support.apple.com support.apple.com support.apple.com openwall.com lists.fedoraproject.org +12 morereceipt
Dated events
Movement the material steps
Show all 41 observations
41 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt
The full biography
Listed by CISA 4 days after it published and the record had been public for 2 years, 9 months when this index was last written.
No material movement in 62 days as of the last ingest this index recorded.
The pattern, elsewhere
This record is one instance of CWE-125, out-of-bounds read. The index holds 9766 prior instances of this class, 18 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]
"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1
9766 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.
No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.
Siblings and hubs
Records related to this one
No record cites this identifier and it carries no alias. The advisory that covers it is below.
Fixed with these, by one advisory
Of the 2 records in this advisory, this is the only one holding a CISA KEV listing: Apple Multiple Products WebKit Out-of-Bounds Read Vulnerabil.
Listed because one advisory covers them, not because they are the same defect. Each record's own state is on its own page.
Grouping: held values
Browse the index from here
These are index-wide views, not findings about CVE-2023-42916.
What usually comes next
Everything above needs no account. What is below is work: assembling it, scoping it to your estate, watching it, and handing it to someone else.