CVE-2019-15784: Secure Reliable Transport (SRT) through 1.3.4 has a CSndUList array overflow if there are many SRT connections

Q: How do I fix CVE-2019-15784?

secure reliable transport: upgrade to newer than 1.3.4. Exact commands for each OS are on this page.

Q: Is CVE-2019-15784 being exploited?

CVE-2019-15784 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-15784 affect?

CVE-2019-15784 affects secure reliable transport. Severity is critical (CVSS 9.8). Secure Reliable Transport (SRT) through 1.3.4 has a CSndUList array overflow if there are many SRT connections.

Q: How urgent is CVE-2019-15784?

Priority 59/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2019-15784 is a critical-severity flaw (CVSS 9.8) affecting secure reliable transport. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Secure Reliable Transport (SRT) through 1.3.4 has a CSndUList array overflow if there are many SRT connections.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.0% (top 20%)
CISA exploited list	No
Weakness	CWE-129
Published	2019-08-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: srtalliance

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-08-29 13:15 UTCPublished CVE record published
2026-06-17 02:21 UTCUpdated Record last modified

srtalliance secure reliable transport UPGRADE

Affected: <= 1.3.4

Fixed in: newer than 1.3.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy secure-reliable-transport || rpm -q secure-reliable-transport || secure-reliable-transport --version

2. UPGRADE to newer than 1.3.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade secure-reliable-transport

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade secure-reliable-transport

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-15784?

secure reliable transport: upgrade to newer than 1.3.4. Exact commands for each OS are on this page.

Is CVE-2019-15784 being exploited?

CVE-2019-15784 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-15784 affect?

CVE-2019-15784 affects secure reliable transport. Severity is critical (CVSS 9.8). Secure Reliable Transport (SRT) through 1.3.4 has a CSndUList array overflow if there are many SRT connections.

How urgent is CVE-2019-15784?

Priority 59/100. Critical severity; Remotely exploitable, no login, no user action

References

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