Is CVE-2010-2621 in the CISA KEV catalog?

No. CVE-2010-2621 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2010-2621?

CVE-2010-2621 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2010-2621?

CVE-2010-2621 has an EPSS score of 10.54% (95th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2010-2621

MEDIUMEPSS 95th pctl

5.0

CVSS v2

NVD

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.

CWE-20Improper Input Validation

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

10.54%probability of exploitation in 30 days

95thpercentile

Very high risk: more likely to be exploited than 95% of all known CVEs.

References

http://aluigi.org/adv/qtsslame-adv.txt
http://aluigi.org/poc/qtsslame.zip
http://osvdb.org/65860
http://qt.gitorious.org/qt/qt/commit/c25c7c9bdfade6b906f37ac8bad44f6f0de57597
http://secunia.com/advisories/40389
http://secunia.com/advisories/46410
http://www.securityfocus.com/bid/41250
http://www.vupen.com/english/advisories/2010/1657
https://hermes.opensuse.org/messages/12056605

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.