CVE-2020-9951

HIGH
8.8
CVSS Score
Published: October 16, 2020 at 04:53 PM UTC
Updated: June 17, 2026 at 03:28 AM UTC
9 products affected across 3 vendorsDebian LinuxiPhone OSiPadOS

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Severity
HIGH8.8
Exploit prediction
EPSS 2%

Description

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.0. Processing maliciously crafted web content may lead to arbitrary code execution.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 11.5
Affected range stops below 11.5, so it looks safe — our inference, not a vendor statement
v < 14.0
Affected range stops below 14.0, so it looks safe — our inference, not a vendor statement
v < 14.0
Affected range stops below 14.0, so it looks safe — our inference, not a vendor statement
v < 12.10.9
Affected range stops below 12.10.9, so it looks safe — our inference, not a vendor statement
v < 14.0v < Safari 14.0
Affected range stops below 14.0, so it looks safe — our inference, not a vendor statement
Affected range stops below Safari 14.0, so it looks safe — our inference, not a vendor statement
v < 14.0
Affected range stops below 14.0, so it looks safe — our inference, not a vendor statement
v < 7.0
Affected range stops below 7.0, so it looks safe — our inference, not a vendor statement
v ≤ 2.30.3

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (13)

Mailing Listx_refsource_FULLDISCThird Party Advisory
http://seclists.org/fulldisclosure/2020/Nov/18
Mailing Listx_refsource_FULLDISCThird Party Advisory
http://seclists.org/fulldisclosure/2020/Nov/19
Mailing Listx_refsource_FULLDISCThird Party Advisory
http://seclists.org/fulldisclosure/2020/Nov/20
Mailing Listx_refsource_FULLDISCThird Party Advisory
http://seclists.org/fulldisclosure/2020/Nov/22
Mailing Listx_refsource_MLISTThird Party Advisory
http://www.openwall.com/lists/oss-security/2020/11/23/3
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
https://security.gentoo.org/glsa/202012-10
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211845
x_refsource_CONFIRMVendor Advisory
https://support.apple.com/kb/HT211843

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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