How severe is CVE-2010-3495?

CVE-2010-3495 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2010-3495 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-3495?

CVE-2010-3495 primarily affects Zope Zodb. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-3495?

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

When was CVE-2010-3495 published?

CVE-2010-3495 was published on 2010-10-19 and last updated on 2026-06-16.

CVE-2010-3495

CVE-2010-3495 is a medium-severity vulnerability in Zope Zodb with a CVSS 2.0 base score of 4.3. 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-362.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-362
Affected product: Zope Zodb
Published: 2010-10-19
Last modified: 2026-06-16

Description

Race condition in ZEO/StorageServer.py in Zope Object Database (ZODB) before 3.10.0 allows remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection, leading to the accept function having an unexpected return value of None, an unexpected value of None for the address, or an ECONNABORTED, EAGAIN, or EWOULDBLOCK error, a related issue to CVE-2010-3492.

Frequently asked questions

What is CVE-2010-3495?: Race condition in ZEO/StorageServer.py in Zope Object Database (ZODB) before 3.10.0 allows remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection, leading to the accept function having an unexpected return value of None, an unexpected value of None for the address, or an ECONNABORTED, EAGAIN, or EWOULDBLOCK error, a related issue to CVE-2010-3492.
How severe is CVE-2010-3495?: CVE-2010-3495 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2010-3495 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-3495?: CVE-2010-3495 primarily affects Zope Zodb. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-3495?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-3495 published?: CVE-2010-3495 was published on 2010-10-19 and last updated on 2026-06-16.

References

Affected products (28)

cpe:2.3:a:zope:zodb:*:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:2.8.11:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:2.9.11:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:2.10.9:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:2.11.4:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.1:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.2:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.2.4:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.3:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.3.3:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.4:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.4.1:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.5:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.6:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.7:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.8:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.8.0:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.8.1:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.8.2:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.8.6:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.9.0:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.9.0b1:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.9.0b2:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.9.0b3:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.9.0b4:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.9.0b5:*:*:*:*:*:*:*
cpe:2.3:a:zope:zodb:3.9.0c1:*:*:*:*:*:*:*

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