How severe is CVE-2010-2621?

CVE-2010-2621 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2010-2621 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-2621?

CVE-2010-2621 primarily affects Digia Qt. In total, 30 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-2621?

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

When was CVE-2010-2621 published?

CVE-2010-2621 was published on 2010-07-02 and last updated on 2026-06-16.

CVE-2010-2621

CVE-2010-2621 is a medium-severity vulnerability in Digia Qt with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 11% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Digia Qt
Published: 2010-07-02
Last modified: 2026-06-16

Description

The QSslSocketBackendPrivate::transmit function in src_network_ssl_qsslsocket_openssl.cpp in Qt 4.6.3 and earlier allows remote attackers to cause a denial of service (infinite loop) via a malformed request.

Frequently asked questions

What is CVE-2010-2621?: The QSslSocketBackendPrivate::transmit function in src_network_ssl_qsslsocket_openssl.cpp in Qt 4.6.3 and earlier allows remote attackers to cause a denial of service (infinite loop) via a malformed request.
How severe is CVE-2010-2621?: CVE-2010-2621 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2010-2621 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-2621?: CVE-2010-2621 primarily affects Digia Qt. In total, 30 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-2621?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-2621 published?: CVE-2010-2621 was published on 2010-07-02 and last updated on 2026-06-16.

References

Affected products (30)

cpe:2.3:a:digia:qt:*:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.1.2:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.1.3:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.1.4:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.1.5:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.2.0:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.2.1:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.2.3:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.3.0:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.3.1:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.3.2:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.3.3:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.3.4:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.3.5:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.4.0:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.4.1:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.4.2:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.4.3:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.5.0:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.5.1:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.5.2:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.5.3:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.6.0:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.6.0:rc1:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.6.1:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.6.2:*:*:*:*:*:*:*

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