01 Record

CVE-2020-9877

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, tvOS 13.4.8, watchOS 6.2.8, iTunes 12.10.8 for Windows,

UnratedPUBLISHEDCNA: apple

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, tvOS 13.4.8, watchOS 6.2.8, iTunes 12.10.8 for Windows,

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 1.33% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 70.7% of scored records. A rank, not a probability.
NVD base score: 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2020-10-22 17:58Z6 YR AGO

Last updated

2024-08-04 10:43Z2 YR AGO

Reserved

2020-03-02

Assigning CNA

apple

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-125Out-of-bounds ReadBase

Data version

5.1

Document digest

1a949e648986c10220e7ed24311ecc2a5b1fa19c136782e3a7314636bb6ea0df

05 Affected products

VendorProductVersionsPlatforms

AppleiOS< iOS 13.6 and iPadOS 13.6—

ApplemacOS< macOS Catalina 10.15.6—

AppletvOS< tvOS 13.4.8—

ApplewatchOS< watchOS 6.2.8—

AppleiTunes for Windows< iTunes 12.10.8 for Windows—

AppleiCloud for Windows< iCloud for Windows 11.3—

AppleiCloud for Windows (Legacy)< iCloud for Windows 7.20—

06 References

support.apple.comhttps://support.apple.com/kb/HT211289x_refsource_MISC
support.apple.comhttps://support.apple.com/kb/HT211288x_refsource_MISC
support.apple.comhttps://support.apple.com/kb/HT211290x_refsource_MISC
support.apple.comhttps://support.apple.com/kb/HT211291x_refsource_MISC
support.apple.comhttps://support.apple.com/kb/HT211293x_refsource_MISC
support.apple.comhttps://support.apple.com/kb/HT211294x_refsource_MISC
support.apple.comhttps://support.apple.com/kb/HT211295x_refsource_MISC