6.5

CVE-2021-38381: live555 Use After Free

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2021-38381DEBIAN-CVE-2021-38381
Published 10-08-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-38381 is a medium (CVSS 6.5) Use After Free vulnerability in live555. EPSS estimates a 1.19% chance of exploitation in the next 30 days, higher than 67.5% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
1.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 10-08-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Live555 through 1.08 does not handle MPEG-1 or 2 files properly. Sending two successive RTSP SETUP commands for the same track causes a Use-After-Free and daemon crash.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.19%

Chance of exploitation in the next 30 days

Percentile

68%

Versus all other CVEs

30-day change

0.00 pp

From 1.19% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (lists.live555.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • liblivemedia< 2026.09.23-dfsg-1
Live5551 product
Ubuntu1 product
  • liblivemediaAll versions (No fix recorded)

3 vendors · 3 products

References

6 links