CVE-2015-1157
CoreText in Apple iOS 8.x through 8.3 allows remote attackers to cause a denial of service (reboot and messaging disruption) via crafted Unicode text that is not properly handled during display truncation in the Notifications feature, as demonstrated by Arabic characters in (1) an SMS message or (2) a WhatsApp message.
CVSS
- Version: 2.0
- Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
- Base score: 7.8
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 5.62%
- Percentile among all scored CVEs: 93
- Score date: 10/8/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
💥 Public exploits
Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.
- Proof of concept on GitHub (unverified) · List of proofs of concept on GitHub
⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.
Affected technologies (3)
CWEs
- CWE-17
References
- http://9to5mac.com/2015/05/27/how-to-fix-ios-text-message-bug-crash-reboot/
- http://lists.apple.com/archives/security-announce/2015/Jun/msg00001.html
- http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00003.html
- http://support.apple.com/kb/HT204941
- http://support.apple.com/kb/HT204942
- http://www.ibtimes.co.uk/apple-ios-bug-sees-message-app-crash-iphone-reboot-simply-by-receiving-message-1503083
- http://www.reddit.com/r/apple/comments/37e8c1/malicious_text_message/
- http://www.reddit.com/r/apple/comments/37enow/about_the_latest_iphone_security_vulnerability/
- http://www.reddit.com/r/explainlikeimfive/comments/37edde/eli5_how_that_text_you_can_send_to_friends_turns/
- http://www.securityfocus.com/bid/75491
- http://www.securitytracker.com/id/1032408
- http://zanzebek.com/a-simple-text-message-can-ruin-any-iphone/
- https://ghostbin.com/paste/zws9m
- https://support.apple.com/HT205221
- http://9to5mac.com/2015/05/27/how-to-fix-ios-text-message-bug-crash-reboot/
- http://lists.apple.com/archives/security-announce/2015/Jun/msg00001.html
- http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00003.html
- http://support.apple.com/kb/HT204941
- http://support.apple.com/kb/HT204942
- http://www.ibtimes.co.uk/apple-ios-bug-sees-message-app-crash-iphone-reboot-simply-by-receiving-message-1503083
- http://www.reddit.com/r/apple/comments/37e8c1/malicious_text_message/
- http://www.reddit.com/r/apple/comments/37enow/about_the_latest_iphone_security_vulnerability/
- http://www.reddit.com/r/explainlikeimfive/comments/37edde/eli5_how_that_text_you_can_send_to_friends_turns/
- http://www.securityfocus.com/bid/75491
- http://www.securitytracker.com/id/1032408
- http://zanzebek.com/a-simple-text-message-can-ruin-any-iphone/
- https://ghostbin.com/paste/zws9m
- https://support.apple.com/HT205221
Raw JSON (NVD)
Show
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