CVE-2020-27930
Apple — Apple Multiple Products Memory Corruption Vulnerability
Apple · CWE-787 — Out-of-bounds write · in CISA KEV since 2021-11-03
EVRS 75 of 100 Urgent
Patch This Cycle
Rank 893 of 2,960 tracked
Raised to the floor for a confirmed exploited vulnerability.
Why it scores 75
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.220.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
Fixed in
ipados: update to 14.2 or later | iphone os: update to 12.4.9 or later | iphone os: update to 14.2 or later | mac os x: update to 10.15.7 or later | macos: update to 11.0.1 or later | watchos: update to 5.3.9 or later
Affected versions
- ipados
< 14.2 - iphone os
< 12.4.9>= 14.0 < 14.2 - mac os x
< 10.15.7 - macos
>= 11.0 < 11.0.1 - watchos
< 5.3.9>= 6.0 < 6.2.9>= 7.0 < 7.1
Remediation
Apply updates per vendor instructions.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 7.8 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.220 (97.7th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2022-05-03 · KEV since 2021 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | None known | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 7.8 (v3.1), assigned by apple. | Listed | ENISA EUVD |
Description
NVDA memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. Processing a maliciously crafted font may lead to arbitrary code execution.
What CISA says to do