# CVE-2021-30860

An integer overflow was addressed with improved input validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, watchOS 7.6.2. Processing a maliciously crafted PDF may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

- Page: https://www.vulneraibility.com/cve/CVE-2021-30860
- CVSS: 7.8
- Known exploited: yes, in CISA KEV since 2021-11-03; CISA due date 2021-11-17
- EPSS: 75.99% (percentile 99.5)
- Unvetted proof-of-concept code on GitHub: 2 GitHub proofs of concept (first 2021-09-18)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2024-02-05)
- Weakness: CWE-190
- Published: 2021-08-24

## Affected versions

- Apple iOS: affected < 14.8
- Apple macOS: affected < 11.6; < 2021-005
- Apple watchOS: affected < 7.6

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://support.apple.com/en-us/HT212804
- [other] https://support.apple.com/en-us/HT212805
- [other] https://support.apple.com/en-us/HT212807
- [other] https://support.apple.com/en-us/HT212806
- [other] http://seclists.org/fulldisclosure/2021/Sep/28
- [other] http://seclists.org/fulldisclosure/2021/Sep/27
- [other] http://seclists.org/fulldisclosure/2021/Sep/25
- [other] http://seclists.org/fulldisclosure/2021/Sep/26
- [other] http://seclists.org/fulldisclosure/2021/Sep/40
- [other] http://seclists.org/fulldisclosure/2021/Sep/38
- [other] http://seclists.org/fulldisclosure/2021/Sep/39
- [other] https://support.apple.com/kb/HT212824
- [other] http://seclists.org/fulldisclosure/2021/Sep/50
- [other] http://www.openwall.com/lists/oss-security/2022/09/02/11
- [advisory] https://security.gentoo.org/glsa/202209-21
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30860

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.