CVE-2021-30860 kev in the critical feed json
An integer overflow was addressed with improved input validation
published 2021-08-24 5 y ago modified 2026-07-18 3 mo ago also EUVD-2021-17777 , JLSEC-2025-195
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2021-11-03
- epss
- 76.0%
- EPSS 76.0% chance of exploitation in 30 days, percentile 99.5%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
cisa required action Apply updates per vendor instructions.
- julia Poppler_jll 23.12.0+0
- Apple macOS 11.6, 2021-005
- Apple watchOS 7.6
- Apple iOS 14.8
Timeline
- Published
- Found exploited as a 0-day (Project Zero)
- 0-day patched (Project Zero)
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 5 y ago
- Patch by
- 2021-11-17 (4 y ago)
- Ransomware
- Not known
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Apple, Multiple Products
- CISA name
- Apple Multiple Products Integer Overflow Vulnerability
Zero-day
Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.
- Found
- 2021-09-07
- Patched
- 2021-09-13
- Details
- project zero tracker
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
75.99% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
| OSV | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| julia | Poppler_jll | <23.12.0+0 |
23.12.0+0 |
Affected products
- Apple macOS
- Apple watchOS
- Apple iOS
Classification
- Weakness
-
- CWE-190 Integer Overflow or Wraparound
References
-
security.gentoo.org
/glsa/202209-21
vendor-advisory, third-party-advisory, web
-
support.apple.com
/en-us/HT212804
vendor-advisory, web
-
support.apple.com
/en-us/HT212805
vendor-advisory, web
-
support.apple.com
/en-us/HT212807
vendor-advisory, web
-
support.apple.com
/en-us/HT212806
vendor-advisory, web
-
support.apple.com
/kb/HT212824
vendor-advisory, web
-
seclists.org
/fulldisclosure/2021/Sep/28
mailing-list, third-party-advisory, web
-
seclists.org
/fulldisclosure/2021/Sep/27
mailing-list, third-party-advisory, web
-
seclists.org
/fulldisclosure/2021/Sep/25
mailing-list, third-party-advisory, web
-
seclists.org
/fulldisclosure/2021/Sep/26
mailing-list, third-party-advisory, web
-
seclists.org
/fulldisclosure/2021/Sep/40
mailing-list, third-party-advisory, web
-
seclists.org
/fulldisclosure/2021/Sep/38
mailing-list, third-party-advisory, web
-
seclists.org
/fulldisclosure/2021/Sep/39
mailing-list, third-party-advisory, web
-
seclists.org
/fulldisclosure/2021/Sep/50
mailing-list, third-party-advisory, web
-
openwall.com
/lists/oss-security/2022/09/02/11
mailing-list, web
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30860
government-resource, us-government-resource, web
Sources
- CVE List CVE-2021-30860
- NVD CVE-2021-30860
- OSV JLSEC-2025-195
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