How severe is CVE-2009-2165?

CVE-2009-2165 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2009-2165 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2165?

CVE-2009-2165 primarily affects Serendipitynz Serene Bach. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2165?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2009-2165 published?

CVE-2009-2165 was published on 2009-06-22 and last updated on 2026-06-16.

CVE-2009-2165

CVE-2009-2165 is a high-severity vulnerability in Serendipitynz Serene Bach with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Serendipitynz Serene Bach
Published: 2009-06-22
Last modified: 2026-06-16

Description

SerendipityNZ (aka SimpleBoxes) Serene Bach 2.20R and earlier, and 3.00 beta023 and earlier 3.x versions, uses a predictable session id, which makes it easier for remote attackers to hijack sessions via a modified id.

Frequently asked questions

What is CVE-2009-2165?: SerendipityNZ (aka SimpleBoxes) Serene Bach 2.20R and earlier, and 3.00 beta023 and earlier 3.x versions, uses a predictable session id, which makes it easier for remote attackers to hijack sessions via a modified id.
How severe is CVE-2009-2165?: CVE-2009-2165 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2009-2165 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2165?: CVE-2009-2165 primarily affects Serendipitynz Serene Bach. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-2165?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-2165 published?: CVE-2009-2165 was published on 2009-06-22 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:a:serendipitynz:serene_bach:*:*:*:*:*:*:*:*
cpe:2.3:a:serendipitynz:serene_bach:1.18r:*:*:*:*:*:*:*
cpe:2.3:a:serendipitynz:serene_bach:1.19r:*:*:*:*:*:*:*
cpe:2.3:a:serendipitynz:serene_bach:2.05r:*:*:*:*:*:*:*
cpe:2.3:a:serendipitynz:serene_bach:2.08d:*:*:*:*:*:*:*
cpe:2.3:a:serendipitynz:serene_bach:2.09r:*:*:*:*:*:*:*
cpe:2.3:a:serendipitynz:serene_bach:3.00:beta023:*:*:*:*:*:*

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