How severe is CVE-2009-3791?

CVE-2009-3791 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2009-3791 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3791?

CVE-2009-3791 primarily affects Adobe Flash Media Server. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-3791?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2009-3791 published?

CVE-2009-3791 was published on 2009-12-21 and last updated on 2026-06-16.

CVE-2009-3791

CVE-2009-3791 is a high-severity vulnerability in Adobe Flash Media Server with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Adobe Flash Media Server
Published: 2009-12-21
Last modified: 2026-06-16

Description

Unspecified vulnerability in Adobe Flash Media Server (FMS) before 3.5.3 allows attackers to cause a denial of service (resource exhaustion) via unknown vectors.

Frequently asked questions

What is CVE-2009-3791?: Unspecified vulnerability in Adobe Flash Media Server (FMS) before 3.5.3 allows attackers to cause a denial of service (resource exhaustion) via unknown vectors.
How severe is CVE-2009-3791?: CVE-2009-3791 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2009-3791 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3791?: CVE-2009-3791 primarily affects Adobe Flash Media Server. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-3791?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-3791 published?: CVE-2009-3791 was published on 2009-12-21 and last updated on 2026-06-16.

References

Affected products (13)

cpe:2.3:a:adobe:flash_media_server:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_media_server:2.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_media_server:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_media_server:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_media_server:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_media_server:2.0.4:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_media_server:2.0.5:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_media_server:3.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_media_server:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_media_server:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_media_server:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_media_server:3.0.4:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_media_server:3.5.1:*:*:*:*:*:*:*

More vulnerabilities in Adobe Flash Media Server

CVE-2010-3635 — Critical (CVSS 10.0): Adobe Flash Media Server (FMS) 3.0.x before 3.0.7, 3.5.x before 3.5.5, and 4.0.x before 4.0.1 allows attackers to…
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CVE-2009-3792 — Critical (CVSS 10.0): Directory traversal vulnerability in Adobe Flash Media Server (FMS) before 3.5.3 allows attackers to load arbitrary DLL…
CVE-2009-1365 — High (CVSS 7.5): Unspecified vulnerability in Adobe Flash Media Server (FMS) before 3.0.4 and 3.5.x before 3.5.2, as used in Flash Media…
CVE-2011-2132 — Medium (CVSS 5.0): Adobe Flash Media Server (FMS) before 3.5.7, and 4.x before 4.0.3, allows attackers to cause a denial of service…
CVE-2011-0612 — Medium (CVSS 5.0): Adobe Flash Media Server (FMS) before 3.5.6, and 4.x before 4.0.2, allows remote attackers to cause a denial of service…

All CVEs affecting Adobe Flash Media Server →

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