CVE-2026-28858

criticalpriority · track · 10EPSS 0.006 · 46 %ileexploit · PoCDEEUNLUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

0.56% (46th) EPSS

CVSS 9.8 · critical

Is it mine?

9 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · ncsc_nl

EPSS · scored 2026-10-27

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.4 and iPadOS 26.4. A remote user may be able to cause unexpected system termination or corrupt kernel memory.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-120US

exploits (1)

Public proof-of-concept and weaponised exploit code.

kaleth4/CVE-2026-28858kaleth4/CVE-2026-28858PoC · poc_in_github

affected products (9)

Products and version ranges known to be affected.

Apple IOS< 18.7.7cert_bundDE
Apple IOS< 26.4cert_bundDE
Apple iPadOS< 18.7.7cert_bundDE
Apple iPadOS< 26.4cert_bundDE
Apple iOS and iPadOS0 → 26.4enisa_euvdEU
Apple IOS≤ vers:unknown/*ncsc_nlNL
Apple iPadOS≤ vers:unknown/*ncsc_nlNL
apple ipados< 26.4nvdUScpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone os< 26.4nvdUScpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

NCSC-2026-0101Kwetsbaarheden verholpen in Apple iOS en iPadOSNL2026-03-25csaf · ncsc_nlNL
Apple heeft meerdere kwetsbaarheden verholpen in iOS en iPadOS.
WID-SEC-W-2026-0852Apple iOS: Mehrere SchwachstellenDeutsch2026-03-24csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Apple iOS und Apple iPadOS ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, und um einen Cross-Site Scripting Angriff durchzuführen.

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund ncsc_nl nvd NVD CVE.org MITRE

published 2026-03-25modified 2026-06-17

references (3)

External citations — patches, advisories, analysis.

scry

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