DaystoPatch

AppleExploited incident

Apple Multiple Buffer Overflow Vulnerability

CVE-2026-20700High, CVSS 7.8In CISA's Known Exploited Vulnerabilities catalog since 12 Feb 2026

Automated timeline. Not yet checked by a researcher, so it doesn't count toward any grade.

FixedFixed for every supported version on the day it became public.

Response

Silence
same day
First public report to first vendor statementUnverified source
Exposure
same day
First public report to first fixUnverified source
Follow-through
same day
First public report to a fix for every supported versionUnverified source
  • Vendor silent
  • Vendor statement, no fix
  • Fixed for some versions
  • Fixed when disclosed
  • Date only, no time of day

Timeline and evidence

Open a moment to see its source and archived quote.

  1. First public report

    Unverified: no archived copy, quote not checked yet

    Bluesky postClaimedQuote not checked yet

    🐛 CVE-2026-20700 (dyld):

    Earliest third-party post we hold. An independent author on another platform posted within 48 hours. Used for unreviewed incidents only, never graded.

    Source
    Bluesky post social
    Recorded time
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    To the minute
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    Claimed. The date the source gives.
    Quote check
    Not checked yet
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    Yes
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    5 more sources for this moment
    Apple advisory 126346/CVE-2026-20700ClaimedQuote not found in archive11 Feb 2026

    iOS 26.3 and iPadOS 26.3: dyld. Impact: An attacker with memory write capability may be able to execute arbitrary code. Apple is aware of a report that this issue may have been exploited in an

    The vendor's own disclosure.

    Recorded time
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    Claimed. The date the source gives.
    Quote check
    Not found in the archived copy. Treat with caution.
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    sha256:67cec6d258cc3357…
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    CVE.org record CVE-2026-20700ClaimedQuote verified11 Feb 2026, 22:58 UTC

    A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An attacker with

    CVE record published.

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    sha256:a42ec817acb6dac9…
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    CISA KEV (CVE-2026-20700)ClaimedQuote verified12 Feb 2026

    Apple Multiple Buffer Overflow Vulnerability

    Added to CISA's KEV catalog on 2026-02-12.

    Recorded time
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    Claimed. The date the source gives.
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    Found in the archived copy
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    sha256:ef8fffede5c47200…
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    Mastodon postClaimedQuote not checked yet12 Feb 2026, 00:00 UTC

    🚨 CRITICAL: CVE-2026-20700 impacts Apple macOS, iOS, iPadOS & more before v26.3. Memory corruption enables arbitrary code execution — exploited in sophisticated, targeted attacks. Urgently

    Earliest third-party post we hold.

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    Mastodon post social
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    Not checked yet
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    Hacker NewsClaimedQuote not checked yet12 Feb 2026, 14:59 UTC

    This is a newly-discovered vulnerability (CVE-2026-20700, addressed along with CVE-2025-14174 and CVE-2025-43529). Note that the description "an attacker with memory write capability may be able to execute arbitrary code"

    Earliest third-party post we hold. An independent author on another platform posted within 48 hours. Used for unreviewed incidents only, never graded.

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    Hacker News hn
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  2. Vendor statement

    date onlysame dayUnverified: quote not found in the archived copy

    Apple advisory 126346/CVE-2026-20700ClaimedQuote not found in archive

    iOS 26.3 and iPadOS 26.3: dyld. Impact: An attacker with memory write capability may be able to execute arbitrary code. Apple is aware of a report that this issue may have been exploited in an

    Recorded time
    Precision
    Date only (no time of day is shown)
    Origin
    Claimed. The date the source gives.
    Quote check
    Not found in the archived copy. Treat with caution.
    Snapshot
    sha256:67cec6d258cc3357…
    Used in metrics
    Yes
    Dispute this timestamp
    4 more sources for this moment
    Apple advisory 126348/CVE-2026-20700ClaimedQuote verified11 Feb 2026

    Released February 11, 2026

    From the advisory's revision history.

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    sha256:d90674b7d8ea7ea8…
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    Apple advisory 126351/CVE-2026-20700ClaimedQuote verified11 Feb 2026

    Released February 11, 2026

    From the advisory's revision history.

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    sha256:ce40fc443f824535…
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    Apple advisory 126352/CVE-2026-20700ClaimedQuote verified11 Feb 2026

    Released February 11, 2026

    From the advisory's revision history.

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    Claimed. The date the source gives.
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    Found in the archived copy
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    Apple advisory 126353/CVE-2026-20700ClaimedQuote verified11 Feb 2026

    Released February 11, 2026

    From the advisory's revision history.

    Recorded time
    Precision
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    Claimed. The date the source gives.
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    Found in the archived copy
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    sha256:652a3363f2052749…
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  3. First workaround

    No official mitigation found yet.

  4. First fix

    date onlysame day

    Apple advisory 126346/CVE-2026-20700ClaimedQuote verified

    Released February 11, 2026

    fixed in iOS 26.3 and iPadOS 26.3; one candidate per OS branch

    Recorded time
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    Claimed. The date the source gives.
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    4 more sources for this moment
    Apple advisory 126348/CVE-2026-20700ClaimedQuote verified11 Feb 2026

    Released February 11, 2026

    fixed in macOS Tahoe 26.3; one candidate per OS branch

    Recorded time
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    Date only (no time of day is shown)
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    Claimed. The date the source gives.
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    Found in the archived copy
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    sha256:d90674b7d8ea7ea8…
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    No, kept for the record
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    Apple advisory 126351/CVE-2026-20700ClaimedQuote verified11 Feb 2026

    Released February 11, 2026

    fixed in tvOS 26.3; one candidate per OS branch

    Recorded time
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    Claimed. The date the source gives.
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    Found in the archived copy
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    sha256:ce40fc443f824535…
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    No, kept for the record
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    Apple advisory 126352/CVE-2026-20700ClaimedQuote verified11 Feb 2026

    Released February 11, 2026

    fixed in watchOS 26.3; one candidate per OS branch

    Recorded time
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    Claimed. The date the source gives.
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    Found in the archived copy
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    sha256:cbd23cf36944e850…
    Used in metrics
    No, kept for the record
    Dispute this timestamp
    Apple advisory 126353/CVE-2026-20700ClaimedQuote verified11 Feb 2026

    Released February 11, 2026

    fixed in visionOS 26.3; one candidate per OS branch

    Recorded time
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    Date only (no time of day is shown)
    Origin
    Claimed. The date the source gives.
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    Found in the archived copy
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    sha256:652a3363f2052749…
    Used in metrics
    No, kept for the record
    Dispute this timestamp

  5. Fixed for all versions

    date onlysame dayUnverified: derived by rule, not read from a source

    Apple advisory 126346/CVE-2026-20700Inferred

    iOS 26.3 and iPadOS 26.3: dyld. Impact: An attacker with memory write capability may be able to execute arbitrary code. Apple is aware of a report that this issue may have been exploited in an

    Patch-day rule: Apple ships fixes in the advisory that discloses a bug, and this advisory states that fixed versions exist. So the vendor statement, first fix and fix for all versions all take the advisory's publication time.

    Recorded time
    Precision
    Date only (no time of day is shown)
    Origin
    Inferred. Derived by a documented rule.
    Quote check
    Not found in the archived copy. Treat with caution.
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    sha256:67cec6d258cc3357…
    Used in metrics
    Yes
    Dispute this timestamp

Send this to your boss

No brief for this incident yet. We write one for every open incident and every critical bug exploited before a fix.

Affected products

  • Multiple Products
  • iOS 26.3 and iPadOS 26.3
  • macOS Tahoe 26.3
  • tvOS 26.3
  • watchOS 26.3
  • visionOS 26.3

Related

Apple report card