An issue was discovered in certain Apple products. iOS before 11.2 is affected. macOS before 10.13.2 is affected. tvOS before 11.2 is affected. watchOS before 4.2 is affected. The issue involves the "Kernel" component. It allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.
CVE-2017-13876
HIGHNVD 7.87.8—Weaponized
EchelonGraph scoreMEDIUM confidence
Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 5%CVSS: 7.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.8
- EG Score
- 7.8(medium)
- EPSS
- 91.4%
- KEV
- Not listed
Published
December 25, 2017
Last Modified
May 13, 2026
References (18)
- product-security@applehttp://www.securityfocus.com/bid/102100
- product-security@applehttp://www.securitytracker.com/id/1039952
- product-security@applehttp://www.securitytracker.com/id/1039953
- product-security@applehttp://www.securitytracker.com/id/1039966
- product-security@applehttps://support.apple.com/HT208325
- product-security@applehttps://support.apple.com/HT208327
- product-security@applehttps://support.apple.com/HT208331
- product-security@applehttps://support.apple.com/HT208334
- product-security@applehttps://www.exploit-db.com/exploits/43325/
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/102100
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1039952
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1039953
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1039966
- af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/HT208325
- af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/HT208327
Publicly available exploits
(1 reference)Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Exploit-DBEDB-43325✓ verifiedFirst seen Dec 12, 2017
Apple XNU Kernel - Memory Corruption due to Integer Overflow in __offsetof Usage in posix_spawn on 32-bit Platforms
Open source ↗
Frequently asked(5)
What is CVE-2017-13876?
CVE-2017-13876 is a high vulnerability published on December 25, 2017. An issue was discovered in certain Apple products. iOS before 11.2 is affected. macOS before 10.13.2 is affected. tvOS before 11.2 is affected. watchOS before 4.2 is affected. The issue involves the "Kernel" component. It allows attackers to execute arbitrary code in a privileged context or cause a…
When was CVE-2017-13876 disclosed?
CVE-2017-13876 was first published in the National Vulnerability Database on December 25, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-13876 actively exploited?
CVE-2017-13876 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 91.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-13876?
CVE-2017-13876 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2017-13876?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-13876, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
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