How severe is CVE-2015-2323?

CVE-2015-2323 has a CVSS 2.0 base score of 6.4, rated medium severity.

Is CVE-2015-2323 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-2323?

CVE-2015-2323 primarily affects Fortinet Fortios. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-2323?

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

When was CVE-2015-2323 published?

CVE-2015-2323 was published on 2015-08-11 and last updated on 2026-06-17.

CVE-2015-2323

CVE-2015-2323 is a medium-severity vulnerability in Fortinet Fortios with a CVSS 2.0 base score of 6.4. 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-310.

Key facts

Severity: Medium (CVSS 2.0 base score 6.4)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-310
Affected product: Fortinet Fortios
Published: 2015-08-11
Last modified: 2026-06-17

Description

FortiOS 5.0.x before 5.0.12 and 5.2.x before 5.2.4 supports anonymous, export, RC4, and possibly other weak ciphers when using TLS to connect to FortiGuard servers, which allows man-in-the-middle attackers to spoof TLS content by modifying packets.

Frequently asked questions

What is CVE-2015-2323?: FortiOS 5.0.x before 5.0.12 and 5.2.x before 5.2.4 supports anonymous, export, RC4, and possibly other weak ciphers when using TLS to connect to FortiGuard servers, which allows man-in-the-middle attackers to spoof TLS content by modifying packets.
How severe is CVE-2015-2323?: CVE-2015-2323 has a CVSS 2.0 base score of 6.4, rated medium severity.
Is CVE-2015-2323 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-2323?: CVE-2015-2323 primarily affects Fortinet Fortios. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-2323?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-2323 published?: CVE-2015-2323 was published on 2015-08-11 and last updated on 2026-06-17.

References

Affected products (16)

cpe:2.3:o:fortinet:fortios:5.0.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.0.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.0.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.0.3:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.0.4:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.0.5:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.0.6:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.0.7:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.0.8:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.0.9:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.0.10:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.0.11:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.2.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.2.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.2.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:5.2.3:*:*:*:*:*:*:*

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