CVE-2019-6256
Live555
- Published
- 14 January 2019
- Last modified
- 17 June 2026
- CVSS
- 9.8 v3.0
- Severity
- critical
- EPSS
- 2.4% (83th pct)
- CISA KEV
- Not listed
- NVD status
- Modified
- Weaknesses
- CWE-755
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
A Denial of Service issue was discovered in the LIVE555 Streaming Media libraries as used in Live555 Media Server 0.93. It can cause an RTSPServer crash in handleHTTPCmd_TunnelingPOST, when RTSP-over-HTTP tunneling is supported, via x-sessioncookie HTTP headers in a GET request and a POST request within the same TCP session. This occurs because of a call to an incorrect virtual function pointer in the readSocket function in GroupsockHelper.cpp.
Exploitation
Not listed in the CISA Known Exploited Vulnerabilities catalogue as of 2026.09.04. That is an absence of confirmed public exploitation, not evidence that exploitation has not occurred. EPSS models a 2.4% probability of exploitation activity in the next 30 days.
Affected products
| Product | Vendor | Type | Versions named |
|---|---|---|---|
| LIVE555 MEDIA SERVER | Live555 | Video management software | 0.92, 0.93 |
References
- https://github.com/rgaufman/live555/issues/19 exploit
- https://lists.debian.org/debian-lts-announce/2019/02/msg00037.html third-party
- https://seclists.org/bugtraq/2019/Mar/22 third-party
- https://security.gentoo.org/glsa/202005-06
- https://www.debian.org/security/2019/dsa-4408 third-party
- https://github.com/rgaufman/live555/issues/19 exploit
- https://lists.debian.org/debian-lts-announce/2019/02/msg00037.html third-party
- https://seclists.org/bugtraq/2019/Mar/22 third-party
- https://security.gentoo.org/glsa/202005-06
- https://www.debian.org/security/2019/dsa-4408 third-party
Record assembled from NVD, CISA KEV 2026.09.04 and FIRST EPSS 2026-09-04. Affected products are those NVD's CPE configuration names that fall inside this site's scope; a CVE may affect products outside it.