CVE-2026-1109: A vulnerability was detected in cijliu librtsp up to 2ec1a81ad65280568a0c7c16420d7c10fde13b04

Q: How do I fix CVE-2026-1109?

librtsp: upgrade to newer than 2021-03-14. Exact commands for each OS are on this page.

Q: Is CVE-2026-1109 being exploited?

CVE-2026-1109 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-2026-1109 affect?

CVE-2026-1109 affects librtsp. Severity is medium (CVSS 5.3). A vulnerability was detected in cijliu librtsp up to 2ec1a81ad65280568a0c7c16420d7c10fde13b04. The impacted element is the function rtsp_parse_request. The manipulation results in buffer overflow. Attacking locally is a requirement. This pr

Q: How urgent is CVE-2026-1109?

Priority 28/100. Public exploit reference

Routine

MEDIUM 5.3UPGRADE

CVE-2026-1109 is a medium-severity flaw (CVSS 5.3) affecting librtsp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was detected in cijliu librtsp up to 2ec1a81ad65280568a0c7c16420d7c10fde13b04. The impacted element is the function rtsp_parse_request. The manipulation results in buffer overflow. Attacking locally is a requirement. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The vendor was contacted early about this disclosure

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 83%)
CISA exploited list	No
Weakness	CWE-119, CWE-120
Published	2026-01-18
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: cijliu

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

Am I affected?

Timeline

2026-01-18 04:15 UTCPublished CVE record published
2026-06-17 10:15 UTCUpdated Record last modified

cijliu librtsp UPGRADE

Affected: <= 2021-03-14

Fixed in: newer than 2021-03-14

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy librtsp || rpm -q librtsp || librtsp --version

2. UPGRADE to newer than 2021-03-14 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade librtsp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade librtsp

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-2026-1109?

librtsp: upgrade to newer than 2021-03-14. Exact commands for each OS are on this page.

Is CVE-2026-1109 being exploited?

CVE-2026-1109 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-2026-1109 affect?

CVE-2026-1109 affects librtsp. Severity is medium (CVSS 5.3). A vulnerability was detected in cijliu librtsp up to 2ec1a81ad65280568a0c7c16420d7c10fde13b04. The impacted element is the function rtsp_parse_request. The manipulation results in buffer overflow. Attacking locally is a requirement. This pr

How urgent is CVE-2026-1109?

Priority 28/100. Public exploit reference

Related CVEs

CVE-2026-1110 MEDIUM 5.3 UPGRADE A flaw has been found in cijliu librtsp up to 2ec1a81ad65280568a0c7c16420d7c10fde13b04
CVE-2026-1108 MEDIUM 5.3 UPGRADE A security vulnerability has been detected in cijliu librtsp up to 2ec1a81ad65280568a0c7c16420d7c10fde13b04

References

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