Page generated: 11 Nov 2026, 09:16 UTC
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CVE-2020-9859

A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5.1 and iPadOS 13.5.1, macOS Catalina 10.15.5 Supplemental Update, tvOS 13.4.6, watchOS 6.2.6. An application may be able to execute arbitrary code with kernel privileges.

CVSS 7.8 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.2/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 7.8: +1.17
  • Fresh EPSS: 0.83%: +0.00

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 7 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

Bitsight
Press · 13 Jan 2023, 15:27 · 2023 Apple & iOS Vulnerabilities from CISA: Data - Bitsight
The Hacker News
Press · 02 Mar 2021, 08:00 · New 'unc0ver' Tool Can Jailbreak All iPhone Models Running iOS 11.0 - 14.3 - The Hacker News
BleepingComputer
Press · 02 Jun 2020, 07:00 · Apple pushes fix across ALL devices for “unc0ver” jailbreak flaw - BleepingComputer
9to5Mac
Press · 01 Jun 2020, 07:00 · Apple releases iOS 13.5.1 and watchOS 6.2.6 with ‘important security updates’ - 9to5Mac
Wccftech
Press · 01 Jun 2020, 07:00 · Apple Confirms that the iOS 13.5.1 Update Kills the Unc0ver Jailbreak - Wccftech
See all 7 source documents
9to5Mac
Press · 01 Jun 2020, 07:00 · Apple confirms iOS 13.5.1 security update patches vulnerability, breaking unc0ver jailbreak - 9to5Mac
iTnews
Press · 24 May 2020, 07:00 · Apple patches iOS to address unc0ver jailbreak - iTnews

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.2 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 7.8; EPSS 0.8%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
local access, low privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:21.708024+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
24 May 2020, 07:00
Published
05 Jun 2020, 14:40
Added to the CISA KEV catalog
03 Nov 2021, 00:00
Latest press mention
13 Jan 2023, 15:27
Score calculated
05 Nov 2026, 13:58