Description
LIVE555 before 2026.04.22 contains an authorization bypass vulnerability in RTSP session command handling that allows attackers to replay valid Session tokens from unauthenticated connections. Attackers who obtain a valid Session token can issue PLAY and TEARDOWN commands from a second TCP connection without authentication, causing server crashes through virtual function call errors or disrupting active streams by terminating victim sessions.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Live Networks | LIVE555 | < 2026.04.22 | 2026.04.22 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | liblivemedia | 2026.09.23-dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | liblivemedia | No fix yet | — |
| Ubuntu 20.04 LTS | liblivemedia | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | liblivemedia | No fix yet | — |
| Ubuntu Pro 16.04 LTS | liblivemedia | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | live555 | 2026.04.22-1.1 | openSUSE-SU-2026:10881-1 |
| openSUSE Leap 16.0 | live555 | 2026.08.25-bp160.1.1 | openSUSE-SU-2026:21863-1 |
Advisories 2
- openSUSE-SU-2026:21863-1 Security update for live555 SUSE / openSUSE Security Updates · Sep 17, 2026
- openSUSE-SU-2026:10881-1 libBasicUsageEnvironment2-2026.04.22-1.1 on GA media SUSE / openSUSE Security Updates · May 29, 2026
References
- https://gist.github.com/yhcho0405/ee9b67a96808ef19f22e8a4ee88c795f technical-description exploit
- https://download.live555.com/ patch product
- https://www.vulncheck.com/advisories/live555-rtsp-server-authorization-bypass-via-session-token third-party-advisory