01 Record
CVE-2026-86950
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1. Processing a maliciously
HighKEVPUBLISHEDCNA: apple
CNA base score8.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
02 Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1. Processing a maliciously
03 Exploitation and scoring
- Exploitation
- Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2026-09-29. Federal remediation due 2026-10-02.
- SSVC decision
- ExploitationactiveCISA reports credible evidence of active exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.81% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Ranks above 55.3% of scored records. A rank, not a probability.
- NVD base score
- 8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-09-29.
- 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
- 2026-09-28 19:13Z1 DAY AGO
- Last updated
- 2026-09-29 14:58Z7 HR AGO
- Reserved
- 2026-09-08
- Assigning CNA
- apple
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-787Out-of-bounds WriteBase
- Data version
- 5.2
- Document digest
- 021ff57de898e6c1d06dab39592883dd24917d31e5d474f4a98086d275cb8238
05 Affected products
VendorProductVersionsPlatforms
06 References
- support.apple.comhttps://support.apple.com/en-us/149226
- support.apple.comhttps://support.apple.com/en-us/149228
- support.apple.comhttps://support.apple.com/en-us/149229
- www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-86950
- seclists.orghttp://seclists.org/fulldisclosure/2026/Sep/89
- seclists.orghttp://seclists.org/fulldisclosure/2026/Sep/90
- seclists.orghttp://seclists.org/fulldisclosure/2026/Sep/91