How severe is CVE-2008-4818?

CVE-2008-4818 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2008-4818 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-4818?

CVE-2008-4818 primarily affects Adobe Flash Player. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-4818?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2008-4818 published?

CVE-2008-4818 was published on 2008-11-10 and last updated on 2026-06-16.

CVE-2008-4818

CVE-2008-4818 is a medium-severity vulnerability in Adobe Flash Player with a CVSS 2.0 base score of 4.3. 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-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Adobe Flash Player
Published: 2008-11-10
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in Adobe Flash Player 9.0.124.0 and earlier allows remote attackers to inject arbitrary web script or HTML via vectors involving HTTP response headers.

Frequently asked questions

What is CVE-2008-4818?: Cross-site scripting (XSS) vulnerability in Adobe Flash Player 9.0.124.0 and earlier allows remote attackers to inject arbitrary web script or HTML via vectors involving HTTP response headers.
How severe is CVE-2008-4818?: CVE-2008-4818 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2008-4818 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-4818?: CVE-2008-4818 primarily affects Adobe Flash Player. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-4818?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-4818 published?: CVE-2008-4818 was published on 2008-11-10 and last updated on 2026-06-16.

References

Affected products (20)

cpe:2.3:a:adobe:flash_player:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:7.0.69.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:8.0.39.0:*:*:*:*:*:*:*
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:9.0.16:*:windows:*:*:*:*:*
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:9.0.28.0:*:mac_os_x:*:*:*:*:*
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:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.47.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.48.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.112.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.114.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:9.0.115.0:*:*:*:*:*:*:*

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