Use after free in Adobe Flash Player
Priority MEDIUM 53CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, Red Hat and Microsoft. Impact type from CWE-416 and the CVSS impact.
Summary
Adobe Flash Player Desktop Runtime 32.0.0.371 and earlier, Adobe Flash Player for Google Chrome 32.0.0.371 and earlier, and Adobe Flash Player for Microsoft Edge and Internet Explorer 32.0.0.330 and earlier have an use after free vulnerability. Successful exploitation could lead to arbitrary code execution.
Why it matters now
EPSS 0.07747 94th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisoryMicrosoft: 1 update
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Adobe | Adobe Flash Player | 32.0.0.371 and earlier, 32.0.0.371 and earlier, and 32.0.0.330 and earlier versions | — | No fix listed | CNA |
- Adobe Flash Player VendorAdobe Affected 32.0.0.371 and earlier, 32.0.0.371 and earlier, and 32.0.0.330 and earlier versions Fixed in — No fix listed CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:adobe:flash_player_desktop_runtime:*:*:*:*:*:*:*:* | up to 32.0.0.371 | Vulnerable | Adobe |
| cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Apple |
| cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Linux |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:adobe:flash_player:*:*:*:*:*:chrome:*:* | up to 32.0.0.371 | Vulnerable | Adobe |
| cpe:2.3:o:google:chrome_os:-:*:*:*:*:*:*:* | not specified by NVD | Running on | |
| cpe:2.3:a:adobe:flash_player:*:*:*:*:*:edge:*:* | up to 32.0.0.330 | Vulnerable | Adobe |
| cpe:2.3:a:adobe:flash_player:*:*:*:*:*:internet_explorer_11:*:* | up to 32.0.0.330 | Vulnerable | Adobe |
| cpe:2.3:o:microsoft:windows_10:*:*:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_8.1:*:*:*:*:*:*:*:* | all versions | Running on | Microsoft |
- cpe:2.3:a:adobe:flash_player_desktop_runtime:*:*:*:*:*:*:*:* Versions up to 32.0.0.371 Vulnerable ·Adobe
- cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Apple
- cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linux
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:adobe:flash_player:*:*:*:*:*:chrome:*:* Versions up to 32.0.0.371 Vulnerable ·Adobe
- cpe:2.3:o:google:chrome_os:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Google
- cpe:2.3:a:adobe:flash_player:*:*:*:*:*:edge:*:* Versions up to 32.0.0.330 Vulnerable ·Adobe
- cpe:2.3:a:adobe:flash_player:*:*:*:*:*:internet_explorer_11:*:* Versions up to 32.0.0.330 Vulnerable ·Adobe
- cpe:2.3:o:microsoft:windows_10:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_8.1:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
Remediation
Red Hat 1 advisory
- RHSA-2020:2547 Released 2020-06-15 · Red Hat rating Criticalflash-plugin security update
- Red Hat Enterprise Linux Desktop Supplementary (v. 6) flash-plugin-32.0.0.387-1.el6_10
- Red Hat Enterprise Linux Server Supplementary (v. 6) flash-plugin-32.0.0.387-1.el6_10
- Red Hat Enterprise Linux Workstation Supplementary (v. 6) flash-plugin-32.0.0.387-1.el6_10
Microsoft 1 update
- ADV200010 Released 2020-06-09June 2020 Adobe Flash Security Update
Vendor assessments
Red Hat
Red Hat rating: Critical. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Desktop Supplementary (v. 6) | Fixed | RHSA-2020:2547 |
| Red Hat Enterprise Linux Server Supplementary (v. 6) | Fixed | RHSA-2020:2547 |
| Red Hat Enterprise Linux Workstation Supplementary (v. 6) | Fixed | RHSA-2020:2547 |
Timeline
- 2026-10-02 Threatist record created from CVE-2020-9633
- 2026-10-03 Alias added: GHSA-hfp4-4377-7cc7
References
More Adobe Flash Player vulnerabilities
- TI-2016-03560 Unspecified vulnerability in Adobe Flash Player 21.0.0.242 and earlier allows remote… KEVCVSS 3.1CRITICAL 9.8
- TI-2016-03506 Adobe Flash Player 21.0.0.226 and earlier allows remote attackers to execute arbitrary… KEVCVSS 3.1CRITICAL 9.8
- TI-2016-00925 Adobe Flash Player 21.0.0.197 and earlier allows remote attackers to cause a denial of… KEVCVSS 3.1CRITICAL 9.8
- TI-2015-04302 Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3)… KEVCVSS 3.1CRITICAL 9.8
- TI-2015-04301 Use-after-free vulnerability in the DisplayObject class in the ActionScript 3 (AS3)… KEVCVSS 3.1CRITICAL 9.8
- TI-2015-04298 Use-after-free vulnerability in the ByteArray class in the ActionScript 3 (AS3)… KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2020-9633 · CVE Program
- CVE-2020-9633 · NVD
- FIRST EPSS
- GHSA-hfp4-4377-7cc7 · GitHub Advisory Database · CC BY 4.0
- CVE-2020-9633 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences