CVE-2017-2521 EXPLOIT
8.8
HIGH · CVSS 3.0 · EPSS 5.9% (pctl 93)
Patch early
A public exploit exists.
Description
An issue was discovered in certain Apple products. iOS before 10.3.2 is affected. Safari before 10.1.1 is affected. tvOS before 10.2.1 is affected. watchOS before 3.2.2 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.
Scoring
| CVSS | 8.8 (HIGH, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 5.9% — more likely to be exploited than 93% of all CVEs |
| Weakness | CWE-119 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2017-05-22 |
| Last modified | 2026-06-17 |
Affected (4)
| Vendor | Product |
|---|---|
| apple | iphone os |
| apple | mac os x |
| apple | tvos |
| apple | watchos |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | WebKit JSC - 'JSObject::ensureLength' ensureLengthSlow Check Failure | 2017-06-01 |
References
- http://www.securityfocus.com/bid/98456
- http://www.securitytracker.com/id/1038487
- https://security.gentoo.org/glsa/201706-15
- https://support.apple.com/HT207798
- https://support.apple.com/HT207800
- https://support.apple.com/HT207801
- https://support.apple.com/HT207804
- https://www.exploit-db.com/exploits/42103/
- http://www.securityfocus.com/bid/98456
- http://www.securitytracker.com/id/1038487
- https://security.gentoo.org/glsa/201706-15
- https://support.apple.com/HT207798
- https://support.apple.com/HT207800
- https://support.apple.com/HT207801
- https://support.apple.com/HT207804
- https://www.exploit-db.com/exploits/42103/
→ the Explorer · watch your stack · NVD