How severe is CVE-2009-5131?

CVE-2009-5131 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2009-5131 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-2009-5131?

CVE-2009-5131 primarily affects Websense Websense Email Security. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-5131?

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

When was CVE-2009-5131 published?

CVE-2009-5131 was published on 2012-08-26 and last updated on 2026-06-16.

CVE-2009-5131

CVE-2009-5131 is a medium-severity vulnerability in Websense Websense Email Security 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Websense Websense Email Security
Published: 2012-08-26
Last modified: 2026-06-16

Description

The Receive Service in Websense Email Security before 7.1 does not recognize domain extensions in the blacklist, which allows remote attackers to bypass intended access restrictions and send e-mail messages via an SMTP session.

Frequently asked questions

What is CVE-2009-5131?: The Receive Service in Websense Email Security before 7.1 does not recognize domain extensions in the blacklist, which allows remote attackers to bypass intended access restrictions and send e-mail messages via an SMTP session.
How severe is CVE-2009-5131?: CVE-2009-5131 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2009-5131 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-2009-5131?: CVE-2009-5131 primarily affects Websense Websense Email Security. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-5131?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-5131 published?: CVE-2009-5131 was published on 2012-08-26 and last updated on 2026-06-16.

References

http://www.websense.com/support/article/t-kbarticle/Release-Notes-for-Websense-Email-Security-v7-1

Affected products (3)

cpe:2.3:a:websense:websense_email_security:*:*:*:*:*:*:*:*
cpe:2.3:a:websense:websense_email_security:6.1:*:*:*:*:*:*:*
cpe:2.3:a:websense:websense_email_security:6.1:sp1:*:*:*:*:*:*

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