How severe is CVE-2008-7293?

CVE-2008-7293 has a CVSS 2.0 base score of 5.8, rated medium severity.

Is CVE-2008-7293 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-7293?

CVE-2008-7293 primarily affects Mozilla Firefox. In total, 120 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-7293?

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

When was CVE-2008-7293 published?

CVE-2008-7293 was published on 2011-08-09 and last updated on 2026-06-16.

CVE-2008-7293

CVE-2008-7293 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 5.8. 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 5.8)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Mozilla Firefox
Published: 2011-08-09
Last modified: 2026-06-16

Description

Mozilla Firefox before 4 cannot properly restrict modifications to cookies established in HTTPS sessions, which allows man-in-the-middle attackers to overwrite or delete arbitrary cookies via a Set-Cookie header in an HTTP response, related to lack of the HTTP Strict Transport Security (HSTS) includeSubDomains feature, aka a "cookie forcing" issue.

Frequently asked questions

What is CVE-2008-7293?: Mozilla Firefox before 4 cannot properly restrict modifications to cookies established in HTTPS sessions, which allows man-in-the-middle attackers to overwrite or delete arbitrary cookies via a Set-Cookie header in an HTTP response, related to lack of the HTTP Strict Transport Security (HSTS) includeSubDomains feature, aka a "cookie forcing" issue.
How severe is CVE-2008-7293?: CVE-2008-7293 has a CVSS 2.0 base score of 5.8, rated medium severity.
Is CVE-2008-7293 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-7293?: CVE-2008-7293 primarily affects Mozilla Firefox. In total, 120 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-7293?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-7293 published?: CVE-2008-7293 was published on 2011-08-09 and last updated on 2026-06-16.

References

Affected products (120)

cpe:2.3:a:mozilla:firefox:*:beta12:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.0:preview_release:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.0.7:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.0.8:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5:beta1:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5:beta2:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.0.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.0.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.0.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.0.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.0.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.0.7:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.0.8:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.0.9:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.0.10:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.0.11:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.0.12:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.7:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.5.8:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:2.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:2.0.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:2.0.0.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:2.0.0.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:2.0.0.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:2.0.0.5:*:*:*:*:*:*:*

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