CVE-2020-9907
CVE-2020-9907 is a security flaw in Apple devices, the software on Apple’s iPhones, iPads and Macs. Attackers can run their own code on Apple devices. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 27 Jun 2022.[1]
Apple devices is in things households have, such as phones, computers, browsers and everyday apps, so the fix matters at home as much as at work. Fixed in version iOS 13.6 and iPadOS 13.6 and tvOS 13.4.8.
Description
CISA calls it a memory corruption in Apple Multiple Products. In its words: “Apple iOS, iPadOS, and tvOS contain a memory corruption vulnerability that could allow an application to execute code with kernel privileges.”[1]
The CVE record adds: “A memory corruption issue was addressed by removing the vulnerable code. This issue is fixed in iOS 13.6 and iPadOS 13.6, tvOS 13.4.8. An application may be able to execute arbitrary code with kernel privileges.”[2]
The underlying weakness is out-of-bounds write (CWE-787), in MITRE’s list of common software weaknesses.
It scores 7.8 out of 10 on the Common Vulnerability Scoring System, which rates it high, scored by NVD using CVSS 3.1.[2]
Affected versions
NVD’s record lists these fixed versions: in each line, everything before the version shown is affected.[2]
| Product | Fixed in |
|---|---|
| iOS | iOS 13.6 and iPadOS 13.6 |
| tvOS | tvOS 13.4.8 |
Every device with Apple devices needs the update.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 27 Jun 2022, 619 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 18 Jul 2022 to fix it.[1]
FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 3%. That’s in the top 12% of the flaws it scores.[4]
CISA assesses it as not automatable: each attack takes some work.
CISA doesn’t say who was attacked, or how.
Fix
Apple has published a fix or advice.[3] CISA’s required action: “Apply updates per vendor instructions.”[1]
- Update Apple devices now.On iPhone and iPad: Settings, General, Software Update. On a Mac: System Settings, General, Software Update. Install it on every Apple device in the house. Then turn on automatic updates, so the next fix arrives on its own.
- Check you’re on iOS 13.6 and iPadOS 13.6 or later.Fixed in version iOS 13.6 and iPadOS 13.6 and tvOS 13.4.8. Anything older is what attackers are going after.
- If there’s no update, stop using it.CISA’s advice when a flaw being used in attacks has no fix is to stop using the product until it does.
Timeline
| Date | Event |
|---|---|
| The flaw is made public in the National Vulnerability Database, with a severity score of 7.8.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks.[1] | |
| CISA’s deadline for US government agencies to fix it.[1] | |
| FIRST puts the odds of it being used in attacks in the next 30 days at 3%.[4] |
See also
Other Apple devices flaws
- CVE-2026-86950: out-of-bounds write ·
- CVE-2025-43520: classic buffer overflow ·
- CVE-2025-43510: improper locking ·
- CVE-2025-31277: buffer overflow ·
- CVE-2023-43000: use-after-free ·
- CVE-2021-30952: integer overflow or wraparound ·
Other out-of-bounds write flaws
- CVE-2026-53266, Linux Kernel: out-of-bounds write ·
- CVE-2026-87491, Chrome and other Chromium browsers: out of bounds write ·
- CVE-2026-53362, Linux Kernel: unspecified ·
- CVE-2022-0995, Linux Kernel: out-of-bounds write ·
- CVE-2026-11645, Chrome and other Chromium browsers: out-of-bounds read and write ·
Added the same day
- CVE-2022-29499, Mitel MiVoice Connect: data validation ·
- CVE-2021-4034, Red Hat Polkit: out-of-bounds read and write ·
- CVE-2021-30983, Apple iOS and iPadOS: buffer overflow ·
- CVE-2021-30533, Chrome and other Chromium browsers: security bypass ·
- CVE-2020-3837, Apple devices: memory corruption ·
Every Apple flaw on CISA’s list · Everything added in June 2022
References
- ^ Cybersecurity and Infrastructure Security Agency. “Apple Multiple Products Memory Corruption Vulnerability”. Known Exploited Vulnerabilities Catalog, added 27 Jun 2022.
- ^ National Institute of Standards and Technology. “CVE-2020-9907 Detail”. National Vulnerability Database, published 16 Oct 2020.
- ^ Apple. Advisories and fixes: support.apple.com, support.apple.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.032, percentile 88.1, 31 Oct 2026.
- CVE Program. “CVE-2020-9907”. The official CVE record.
This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.