CVE-2017-13849
It allows remote attackers to cause a denial of service (application crash) via a crafted text file.
Does this matter?
A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 3.9%. Treat it as high on anything reachable from the internet.
Description
An issue was discovered in certain Apple products. iOS before 11.1 is affected. tvOS before 11.1 is affected. watchOS before 4.1 is affected. The issue involves the "CoreText" component. It allows remote attackers to cause a denial of service (application crash) via a crafted text file.
- CVSS 3.0
- 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 3.94% probability · 90th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 20 November 2017
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- apple/iphone os · apple/tvos · apple/watchos
- Source
- product-security@apple.com
EPSS moved from 5.7% on 21 September 2026 to 3.9% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
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.
References
- http://www.securityfocus.com/bid/101691Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039703Third Party Advisory, VDB Entry
- https://support.apple.com/HT208219Vendor Advisory
- https://support.apple.com/HT208220Vendor Advisory
- https://support.apple.com/HT208222Vendor Advisory
- https://www.exploit-db.com/exploits/43161/Exploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/101691Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039703Third Party Advisory, VDB Entry
- https://support.apple.com/HT208219Vendor Advisory
- https://support.apple.com/HT208220Vendor Advisory
- https://support.apple.com/HT208222Vendor Advisory
- https://www.exploit-db.com/exploits/43161/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.