SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-2522

It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via crafted data.

EXPLOIT ✓CRITICAL 9.8EPSS 6.59%

Does this matter?

A public exploit is published in Exploit-DB (verified) and the impact is critical, while EPSS rates exploitation at 6.6%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.

Description

An issue was discovered in certain Apple products. iOS before 10.3.2 is affected. macOS before 10.12.5 is affected. tvOS before 10.2.1 is affected. watchOS before 3.2.2 is affected. The issue involves the "CoreFoundation" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via crafted data.

CVSS 3.0
9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
6.59% probability · 94th percentile
Public exploits
1 in Exploit-DB · verified · first 23 May 2017
CISA KEV
Not listed
Weakness
CWE-119
Affected
apple/iphone os · apple/mac os x · apple/tvos · apple/watchos
Source
product-security@apple.com
EPSS trend
0%5%10%27 October 2026: 6.59%27 October 202627 October 2026

EPSS 6.6% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-42049source ↗Apple macOS/iOS - Memory Corruption Due to Bad Bounds Checking in NSCharacterSet Coding for NSKeyedUnarchivermultiple · Google Security Researchdos23 May 2017yes

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.