How severe is CVE-2021-41396?

CVE-2021-41396 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-2021-41396 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41396?

CVE-2021-41396 affects Live555. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41396?

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-2021-41396 published?

CVE-2021-41396 was published on 2022-07-12 and last updated on 2026-06-17.

CVE-2021-41396

CVE-2021-41396 is a high-severity vulnerability in Live555 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. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Live555
Published: 2022-07-12
Last modified: 2026-06-17

Description

Live555 through 1.08 does not handle socket connections properly. A huge number of incoming socket connections in a short time invokes the error-handling module, in which a heap-based buffer overflow happens. An attacker can leverage this to launch a DoS attack.

Frequently asked questions

What is CVE-2021-41396?: Live555 through 1.08 does not handle socket connections properly. A huge number of incoming socket connections in a short time invokes the error-handling module, in which a heap-based buffer overflow happens. An attacker can leverage this to launch a DoS attack.
How severe is CVE-2021-41396?: CVE-2021-41396 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-2021-41396 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41396?: CVE-2021-41396 affects Live555. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41396?: 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-2021-41396 published?: CVE-2021-41396 was published on 2022-07-12 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Live555

CVE-2023-37117 — Critical (CVSS 9.8): A heap-use-after-free vulnerability was found in live555 version 2023.05.10 while handling the SETUP.
CVE-2021-39282 — High (CVSS 7.5): Live555 through 1.08 has a memory leak in AC3AudioStreamParser for AC3 files.
CVE-2021-38380 — High (CVSS 7.5): Live555 through 1.08 mishandles huge requests for the same MP3 stream, leading to recursion and s stack-based buffer…
CVE-2021-38382 — Medium (CVSS 6.5): Live555 through 1.08 does not handle Matroska and Ogg files properly. Sending two successive RTSP SETUP commands for…
CVE-2021-38381 — Medium (CVSS 6.5): Live555 through 1.08 does not handle MPEG-1 or 2 files properly. Sending two successive RTSP SETUP commands for the…
CVE-2021-39283 — Medium (CVSS 5.5): liveMedia/FramedSource.cpp in Live555 through 1.08 allows an assertion failure and application exit via multiple SETUP…

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