How severe is CVE-2011-2427?

CVE-2011-2427 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2011-2427 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-2427?

CVE-2011-2427 primarily affects Adobe Flash Player. In total, 95 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-2427?

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

When was CVE-2011-2427 published?

CVE-2011-2427 was published on 2011-09-22 and last updated on 2026-06-16.

CVE-2011-2427

CVE-2011-2427 is a critical-severity vulnerability in Adobe Flash Player with a CVSS 2.0 base score of 9.3. 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-119.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Adobe Flash Player
Published: 2011-09-22
Last modified: 2026-06-16

Description

Stack-based buffer overflow in the ActionScript Virtual Machine (AVM) component in Adobe Flash Player before 10.3.183.10 on Windows, Mac OS X, Linux, and Solaris, and before 10.3.186.7 on Android, allows attackers to execute arbitrary code or cause a denial of service via unspecified vectors.

Frequently asked questions

What is CVE-2011-2427?: Stack-based buffer overflow in the ActionScript Virtual Machine (AVM) component in Adobe Flash Player before 10.3.183.10 on Windows, Mac OS X, Linux, and Solaris, and before 10.3.186.7 on Android, allows attackers to execute arbitrary code or cause a denial of service via unspecified vectors.
How severe is CVE-2011-2427?: CVE-2011-2427 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2011-2427 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-2427?: CVE-2011-2427 primarily affects Adobe Flash Player. In total, 95 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-2427?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2011-2427 published?: CVE-2011-2427 was published on 2011-09-22 and last updated on 2026-06-16.

References

Affected products (95)

cpe:2.3:a:adobe:flash_player:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:6.0.21.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:6.0.79:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.1:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.14.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.19.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.24.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.25:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.53.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.60.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.61.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.63:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.66.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.67.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.68.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.69.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.70.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.73.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.1:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.1.1:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.2:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:8.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:8.0.22.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:8.0.24.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:8.0.33.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:8.0.34.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:8.0.35.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:8.0.39.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:8.0.42.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.16:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.18d60:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.20:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.20.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.28:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.28.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.31:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.31.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.45.0:*:*:*:*:*:*:*

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