At a glance
Actively exploited in the wild — prioritise confirming exposure.
Medium rather than High: exposure is scored at a default because we cannot see your systems or suppliers. If you run or depend on Apple Multiple Products, treat it as High.
Briefing
- Do not treat uncorroborated claims as confirmed breaches.
Questions to ask IT
- Do we run Apple Multiple Products, and which versions?
- Is any of it reachable from the internet?
- Have we checked whether it has already been used against us?
- If it is not yet patched, what mitigation is in place, and will the fix be done by 11 Nov?
Next steps
- Confirm exposure, mitigation status and any service interruption risk.
Vulnerability facts
Full CVE detail CVE-2022-48503- 8.8 · HighExploitable over the network without any account, but only if a user takes an action, such as opening a file or link. High impact on confidentiality, integrity and availability.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Listed: attacks using it have been seen (on the catalogue since )
- ~3.2% estimated chance of attack in 30 days
No technical write-up beyond these facts and the summary below yet.
Next steps
- Confirm whether affected products/versions are present and prioritise patching or mitigations
Summary
- Apple macOS, iOS, tvOS, Safari, and watchOS contain an unspecified vulnerability in JavaScriptCore that when processing web content may lead to arbitrary code execution. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS).
- CVE-2022-48503 is listed in known-exploited catalogue (exploitation in the wild)
- Authoritative catalogues report active exploitation of this vulnerability.
Why this matters in the UK
- Known-exploited catalogue reports exploitation in the wild
Products and services involved
- Apple Multiple Products98% match confidence · CVE-2022-48503
Part of Apple vulnerabilities and exploitation
Pulse
Last checked 4d ago · Recheck overdue since 5 Nov 2026, 23:04 UK time · 2 quiet checks collapsed
in the next 30 days first recorded at 3.2% (lower likelihood signal, not confirmed exploitation). Suggested changed to 7d.
recorded — watch for changes; not confirmed exploitation.
2 quiet checks hidden.
Sources
Apple Multiple Products Unspecified Vulnerability
How we know
Statements extracted from sources. Higher confidence means stronger corroboration.
- ConfirmedHeadline90% confidence
Apple Multiple Products Unspecified Vulnerability
- ConfirmedSummary fact75% confidence
Apple macOS, iOS, tvOS, Safari, and watchOS contain an unspecified vulnerability in JavaScriptCore that when processing web content may lead to arbitrary code execution. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization. Affects Apple Multiple Products. Known ransomware campaign use: Unknown.
- ConfirmedCVE identifier95% confidence
Event involves CVE-2022-48503
- ConfirmedKnown-exploited catalogue98% confidence
CVE-2022-48503 is listed in known-exploited catalogue (exploitation in the wild)

