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.
CVE-2015-1157
- No confirmed exploitation signals yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EG Risk
- 0EG Risk 0/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses intrinsic severity with real-world exploitation and automatability, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. It is distinct from the 0–10 EG Score, which measures severity.
- EPSS
- 92.0%
- KEV
- Not listed
Published
May 28, 2015
Last Modified
May 6, 2026
References (30)
- product-security@applehttp://9to5mac.com/2015/05/27/how-to-fix-ios-text-message-bug-crash-reboot/
- product-security@applehttp://lists.apple.com/archives/security-announce/2015/Jun/msg00001.html
- product-security@applehttp://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html
- product-security@applehttp://lists.apple.com/archives/security-announce/2015/Sep/msg00003.html
- product-security@applehttp://support.apple.com/kb/HT204941
- product-security@applehttp://support.apple.com/kb/HT204942
- product-security@applehttp://www.ibtimes.co.uk/apple-ios-bug-sees-message-app-crash-iphone-reboot-simply-by-receiving-message-1503083
- product-security@applehttp://www.reddit.com/r/apple/comments/37e8c1/malicious_text_message/
- product-security@applehttp://www.reddit.com/r/apple/comments/37enow/about_the_latest_iphone_security_vulnerability/
- product-security@applehttp://www.reddit.com/r/explainlikeimfive/comments/37edde/eli5_how_that_text_you_can_send_to_friends_turns/
- product-security@applehttp://www.securityfocus.com/bid/75491
- product-security@applehttp://www.securitytracker.com/id/1032408
- product-security@applehttp://zanzebek.com/a-simple-text-message-can-ruin-any-iphone/
- product-security@applehttps://ghostbin.com/paste/zws9m
- product-security@applehttps://support.apple.com/HT205221
Data Freshness Timeline
(refreshed 13× in last 7d / 39× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-24 14:13 UTCEPSS rescore
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- 2026-05-23 01:19 UTCEG score recompute
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Publicly available exploits
(1 reference)Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- GitHub PoCperillamint/CVE-2015-1157First seen Oct 14, 2015
CVE-2015-1157 telnet server
Open source ↗
Frequently asked(4)
What is CVE-2015-1157?
When was CVE-2015-1157 disclosed?
Is CVE-2015-1157 actively exploited?
How do I remediate CVE-2015-1157?
Dependency Blast Radius
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