CVE-2021-30860
HighExploitedPublic exploitAn integer overflow was addressed with improved input validation.
Published Oct 13, 2021 · Updated Jul 18, 2026 · Also known as JLSEC-2025-195
Key Facts
Patch immediately- CVE-2021-30860 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Poppler (Freedesktop), Xpdf (Xpdfreader), Ipados (Apple) and 6 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 7, 2021. Public exploit code is available.
- EPSS estimates a 76% probability of exploitation in the next 30 days.
- Fixed versions are available, including Ipados 14.8, Iphone OS 12.5.5, Mac OS X 10.15.7.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
76%
Higher than 99.5% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2021-30860 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Nov 3, 2021 | Nov 17, 2021 | Not reported |
| Industry KEV feed | Sep 7, 2021 | Nov 17, 2021 | Not reported |
| CIRCL KEV | Nov 3, 2021 | Nov 17, 2021 | Not reported |
| ENISA EUVD | Nov 3, 2021 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
18 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| PopplerFreedesktop | See advisory | 22.09.0 |
| XpdfXpdfreader | See advisory | 4.04 |
| IpadosApple | See advisory | 14.8 |
| Iphone OSApple | See advisory | 12.5.5 |
| macOSApple | >= unspecified | 11.6 |
Patched Releases
Ipados
14.8
Iphone OS
12.5.5
Mac OS X
10.15.7
macOS
11.6, 2021-005
watchOS
7.6.2, 7.6
Poppler
22.09.0
iOS
14.8
Poppler_jll
23.12.0+0
Xpdf
4.04
Timeline
Added to Industry KEV feed
Sep 7, 2021
Publicly disclosed
Oct 13, 2021
Added to CISA KEV
Nov 3, 2021
Added to CIRCL KEV
Nov 3, 2021
Added to ENISA EUVD
Nov 3, 2021
Last updated
Jul 18, 2026
Weakness Type
- CWE-190 Integer Overflow or Wraparound
References
- advisoryhttp://feedproxy.google.com/~r/TheHackersNews/~3/elwYiDkfEBM/apple-releases-urgent-iphone-and-ipad.html
- advisoryhttps://apple.slashdot.org/story/21/09/13/1936213/apple-patches-a-nso-zero-day-flaw-affecting-all-devices?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+Slashdot/slashdot+(Slashdot)Apple
- advisoryhttps://blog.talosintelligence.com/2021/09/microsoft-patch-tuesday-for-sept-2021.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+feedburner%2FTalos+%28Talos%E2%84%A2+Blog%29
- advisoryhttps://citizenlab.ca/2021/09/forcedentry-nso-group-imessage-zero-click-exploit-captured-in-the-wild/
- advisory20210917 APPLE-SA-2021-09-13-1 iOS 14.8 and iPadOS 14.8
FAQ
Common Questions.
An integer overflow was addressed with improved input validation.
Affected: Poppler (Freedesktop); Xpdf (Xpdfreader); Ipados (Apple), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 7, 2021.
Yes. It was added on Nov 3, 2021 with a federal remediation due date of Nov 17, 2021.
Public exploit code is available.
Fixed versions are available, including Ipados 14.8, Iphone OS 12.5.5, Mac OS X 10.15.7.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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