How severe is CVE-2021-28899?

CVE-2021-28899 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-28899 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28899?

CVE-2021-28899 affects Live555 Streaming Media. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-28899?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-28899 published?

CVE-2021-28899 was published on 2021-04-29 and last updated on 2026-06-17.

CVE-2021-28899

CVE-2021-28899 is a high-severity vulnerability in Live555 Streaming Media with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Live555 Streaming Media
Published: 2021-04-29
Last modified: 2026-06-17

Description

Vulnerability in the AC3AudioFileServerMediaSubsession, ADTSAudioFileServerMediaSubsession, and AMRAudioFileServerMediaSubsessionLive OnDemandServerMediaSubsession subclasses in Networks LIVE555 Streaming Media before 2021.3.16.

Frequently asked questions

What is CVE-2021-28899?: Vulnerability in the AC3AudioFileServerMediaSubsession, ADTSAudioFileServerMediaSubsession, and AMRAudioFileServerMediaSubsessionLive OnDemandServerMediaSubsession subclasses in Networks LIVE555 Streaming Media before 2021.3.16.
How severe is CVE-2021-28899?: CVE-2021-28899 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-28899 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28899?: CVE-2021-28899 affects Live555 Streaming Media. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-28899?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-28899 published?: CVE-2021-28899 was published on 2021-04-29 and last updated on 2026-06-17.

References

http://lists.live555.com/pipermail/live-devel/2021-March/021891.html

Affected products (1)

cpe:2.3:a:live555:streaming_media:*:*:*:*:*:*:*:*

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