CVE-2020-9983
No exploitation reported by the sources we read.
- Published2020-10-16
- WeaknessCWE-787
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Safari 14.0. Processing maliciously crafted web content may lead to code execution.
Timeline
dates in UTC- 2020-10-1617:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-9983?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-9983?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 32.x | = 32 | no fix published | NVD |
| 33.x | = 33 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 11.5 | = 11.5 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 14.0 | < 14.0 | 14.0 | NVD |
5 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- accountsservice-develAlmaLinux:8all versions · fixed in 0.6.55-1.el8
- atkmmAlmaLinux:8all versions · fixed in 2.24.2-7.el8and 2 other packages
- cairommAlmaLinux:8all versions · fixed in 1.12.0-8.el8and 2 other packages
- chrome-gnome-shellAlmaLinux:8all versions · fixed in 10.1-7.el8
- dleyna-coreAlmaLinux:8all versions · fixed in 0.6.0-3.el8and 1 other package
- enchant2AlmaLinux:8all versions · fixed in 2.2.3-3.el8and 1 other package
- gaminAlmaLinux:8all versions · fixed in 0.1.10-32.el8and 1 other package
- geoclue2AlmaLinux:8all versions · fixed in 2.5.5-2.el8and 3 other packages
24 more package ranges on OSV.dev
Fix
Advisories and patches
- support.apple.comRelease Notes · Vendor Advisory
- support.apple.comVendor Advisory
- support.apple.comVendor Advisory
- support.apple.comVendor Advisory
- support.apple.comVendor Advisory
- support.apple.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.18.8read 2026-10-23
- NVDCVSS 2.06.8read 2026-10-23
- NVDweakness (CWE)CWE-787read 2026-10-23
- FIRST EPSSEPSS score2.2 %2026-10-23
- OSVaffected packages—
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published
- 2020-10-16
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-9983?
Is CVE-2020-9983 actively exploited?
What is the CVSS score for CVE-2020-9983?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.