No exploitation reportedFix available

CVE-2020-3757

Q: Is CVE-2020-3757 actively exploited?

Active exploitation of CVE-2020-3757 has not been confirmed. Its EPSS score was 10.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2020-3757?

CVE-2020-3757 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2020-02-13
Fixed in32.0.0.321 · 32.0.0.314
WeaknessCWE-843

Am I 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

Adobe Flash Player versions 32.0.0.321 and earlier, 32.0.0.314 and earlier, 32.0.0.321 and earlier, and 32.0.0.255 and earlier have a type confusion vulnerability. Successful exploitation could lead to arbitrary code execution.

Timeline

dates in UTC

2020-02-1316:15CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-3757?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-3757?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Adobe flash playerversion to verify

Branch	Affected	Fixed in	Source
32.0	< 32.0.0.321	32.0.0.321	NVD
32.0	< 32.0.0.314	32.0.0.314	NVD
32.0	≤ 32.0.0.321	no fix published	NVD
32.0	≤ 32.0.0.255	no fix published	NVD

Redhat enterprise linux desktop

Branch	Affected	Fixed in	Source
6.0	= 6.0	no fix published	NVD

Redhat enterprise linux server

Branch	Affected	Fixed in	Source
6.0	= 6.0	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Adobe flash player to 32.0.0.321 · 32.0.0.314

Advisories and patches

access.redhat.comPatch
helpx.adobe.comPatch · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.18.8read 2026-10-23
NVDCVSS 2.09.3read 2026-10-23
NVDweakness (CWE)CWE-843read 2026-10-23
FIRST EPSSEPSS score10.2 %read 2026-10-23

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: 2020-02-13
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-3757?

Is CVE-2020-3757 actively exploited?

Active exploitation of CVE-2020-3757 has not been confirmed. Its EPSS score was 10.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-3757?

CVE-2020-3757 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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