CVE-2010-2621

Exp

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.

Published: 2010-07-02 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2010-2621 is rated High Exploit Risk (67.1/100): CVSS Medium severity, with high exploitation likelihood (EPSS 12.00%, 93th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2010-2621

EDB-ID Source Kind Published Link
14268 exploit_db edb 2010-07-08 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2010-2621

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-07-13 12.57% 12.00% -0.57%
2 2025-05-18 14.10% 12.57% -1.53%
3 2025-03-30 — 14.10% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2010-2621

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2010-2621

OS Trackers for CVE-2010-2621

vendor priority summary link
redhat low — https://access.redhat.com/security/cve/CVE-2010-2621
ubuntu low CVE-2010-2621 low priority: Ubuntu including 1 source packages (qt4-x11), 9 status rows across 9 suites (dapper, hardy, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): ignored 5, not-affected 3, needs-triage 1. https://ubuntu.com/security/CVE-2010-2621

Affected software / configurations for CVE-2010-2621

Vendor Product Version Raw CPE
digia qt <= 4.6.3 cpe:2.3:a:digia:qt:*:*:*:*:*:*:*:*
qt qt 4.0.0 cpe:2.3:a:qt:qt:4.0.0:*:*:*:*:*:*:*
qt qt 4.0.1 cpe:2.3:a:qt:qt:4.0.1:*:*:*:*:*:*:*
qt qt 4.1.0 cpe:2.3:a:qt:qt:4.1.0:*:*:*:*:*:*:*
qt qt 4.1.1 cpe:2.3:a:qt:qt:4.1.1:*:*:*:*:*:*:*
qt qt 4.1.2 cpe:2.3:a:qt:qt:4.1.2:*:*:*:*:*:*:*
qt qt 4.1.3 cpe:2.3:a:qt:qt:4.1.3:*:*:*:*:*:*:*
qt qt 4.1.4 cpe:2.3:a:qt:qt:4.1.4:*:*:*:*:*:*:*
qt qt 4.1.5 cpe:2.3:a:qt:qt:4.1.5:*:*:*:*:*:*:*
qt qt 4.2.0 cpe:2.3:a:qt:qt:4.2.0:*:*:*:*:*:*:*
qt qt 4.2.1 cpe:2.3:a:qt:qt:4.2.1:*:*:*:*:*:*:*
qt qt 4.2.3 cpe:2.3:a:qt:qt:4.2.3:*:*:*:*:*:*:*
qt qt 4.3.0 cpe:2.3:a:qt:qt:4.3.0:*:*:*:*:*:*:*
qt qt 4.3.1 cpe:2.3:a:qt:qt:4.3.1:*:*:*:*:*:*:*
qt qt 4.3.2 cpe:2.3:a:qt:qt:4.3.2:*:*:*:*:*:*:*
qt qt 4.3.3 cpe:2.3:a:qt:qt:4.3.3:*:*:*:*:*:*:*
qt qt 4.3.4 cpe:2.3:a:qt:qt:4.3.4:*:*:*:*:*:*:*
qt qt 4.3.5 cpe:2.3:a:qt:qt:4.3.5:*:*:*:*:*:*:*
qt qt 4.4.0 cpe:2.3:a:qt:qt:4.4.0:*:*:*:*:*:*:*
qt qt 4.4.1 cpe:2.3:a:qt:qt:4.4.1:*:*:*:*:*:*:*
qt qt 4.4.2 cpe:2.3:a:qt:qt:4.4.2:*:*:*:*:*:*:*
qt qt 4.4.3 cpe:2.3:a:qt:qt:4.4.3:*:*:*:*:*:*:*
qt qt 4.5.0 cpe:2.3:a:qt:qt:4.5.0:*:*:*:*:*:*:*
qt qt 4.5.1 cpe:2.3:a:qt:qt:4.5.1:*:*:*:*:*:*:*
qt qt 4.5.2 cpe:2.3:a:qt:qt:4.5.2:*:*:*:*:*:*:*
qt qt 4.5.3 cpe:2.3:a:qt:qt:4.5.3:*:*:*:*:*:*:*
qt qt 4.6.0 cpe:2.3:a:qt:qt:4.6.0:*:*:*:*:*:*:*
qt qt 4.6.0 cpe:2.3:a:qt:qt:4.6.0:rc1:*:*:*:*:*:*
qt qt 4.6.1 cpe:2.3:a:qt:qt:4.6.1:*:*:*:*:*:*:*
qt qt 4.6.2 cpe:2.3:a:qt:qt:4.6.2:*:*:*:*:*:*:*

References for CVE-2010-2621

cvelogic Threat Intelligence