CVE-2010-2621

medium

Published 2010-07-02 · Modified 2026-04-29

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

6.0

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.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-14268 dos multiple verified

Luigi Auriemma · 2010-07-08

Qt 4.6.3 - 'QSslSocketBackendPrivate::transmit()' Denial of Service

Source code queued for fetch — refresh in a moment.

Application impact

Vendor	Product	Versions
digia	qt	`{"endIncluding":"4.6.3"}`
qt	qt	`4.0.0`
qt	qt	`4.0.1`
qt	qt	`4.1.0`
qt	qt	`4.1.1`
qt	qt	`4.1.2`
qt	qt	`4.1.3`
qt	qt	`4.1.4`
qt	qt	`4.1.5`
qt	qt	`4.2.0`
qt	qt	`4.2.1`
qt	qt	`4.2.3`
qt	qt	`4.3.0`
qt	qt	`4.3.1`
qt	qt	`4.3.2`
qt	qt	`4.3.3`
qt	qt	`4.3.4`
qt	qt	`4.3.5`
qt	qt	`4.4.0`
qt	qt	`4.4.1`
qt	qt	`4.4.2`
qt	qt	`4.4.3`
qt	qt	`4.5.0`
qt	qt	`4.5.1`
qt	qt	`4.5.2`
qt	qt	`4.5.3`
qt	qt	`4.6.0`
qt	qt	`4.6.1`
qt	qt	`4.6.2`

References

CWEs

CWE-20

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.