How severe is CVE-2011-4747?

CVE-2011-4747 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-4747 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4747?

CVE-2011-4747 affects Parallels Parallels Plesk Panel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-4747?

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

When was CVE-2011-4747 published?

CVE-2011-4747 was published on 2011-12-16 and last updated on 2026-06-16.

CVE-2011-4747

CVE-2011-4747 is a medium-severity vulnerability in Parallels Parallels Plesk Panel with a CVSS 2.0 base score of 5.0. 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 5.0)
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-310
Affected product: Parallels Parallels Plesk Panel
Published: 2011-12-16
Last modified: 2026-06-16

Description

The billing system for Parallels Plesk Panel 10.3.1_build1013110726.09 does not prevent the use of weak ciphers for SSL sessions, which makes it easier for remote attackers to defeat cryptographic protection mechanisms via a crafted CipherSuite list.

Frequently asked questions

What is CVE-2011-4747?: The billing system for Parallels Plesk Panel 10.3.1_build1013110726.09 does not prevent the use of weak ciphers for SSL sessions, which makes it easier for remote attackers to defeat cryptographic protection mechanisms via a crafted CipherSuite list.
How severe is CVE-2011-4747?: CVE-2011-4747 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-4747 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4747?: CVE-2011-4747 affects Parallels Parallels Plesk Panel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-4747?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-4747 published?: CVE-2011-4747 was published on 2011-12-16 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:parallels:parallels_plesk_panel:10.3.1_build1013110726.09:*:*:*:*:*:*:*

More vulnerabilities in Parallels Parallels Plesk Panel

CVE-2011-4749 — Critical (CVSS 10.0): The billing system for Parallels Plesk Panel 10.3.1_build1013110726.09 generates a password form field without…
CVE-2011-4744 — Critical (CVSS 10.0): The Control Panel in Parallels Plesk Panel 10.2.0 build 20110407.20 sends incorrect Content-Type headers for certain…
CVE-2011-4743 — Critical (CVSS 10.0): The Control Panel in Parallels Plesk Panel 10.2.0 build 20110407.20 omits the Content-Type header's charset parameter…
CVE-2011-4739 — Critical (CVSS 10.0): The Control Panel in Parallels Plesk Panel 10.2.0 build 20110407.20 generates a password form field without disabling…
CVE-2011-4733 — Critical (CVSS 10.0): The Server Administration Panel in Parallels Plesk Panel 10.2.0_build1011110331.18 sends incorrect Content-Type headers…
CVE-2011-4732 — Critical (CVSS 10.0): The Server Administration Panel in Parallels Plesk Panel 10.2.0_build1011110331.18 omits the Content-Type header's…

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