How severe is CVE-2020-24944?

CVE-2020-24944 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-2020-24944 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-24944?

CVE-2020-24944 affects Privateoctopus Picoquic. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-24944?

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-2020-24944 published?

CVE-2020-24944 was published on 2021-02-08 and last updated on 2026-06-17.

CVE-2020-24944

CVE-2020-24944 is a high-severity vulnerability in Privateoctopus Picoquic 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-835.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-835
Affected product: Privateoctopus Picoquic
Published: 2021-02-08
Last modified: 2026-06-17

Description

picoquic (before 3rd of July 2020) allows attackers to cause a denial of service (infinite loop) via a crafted QUIC frame, related to the picoquic_decode_frames and picoquic_decode_stream_frame functions and epoch==3.

Frequently asked questions

What is CVE-2020-24944?: picoquic (before 3rd of July 2020) allows attackers to cause a denial of service (infinite loop) via a crafted QUIC frame, related to the picoquic_decode_frames and picoquic_decode_stream_frame functions and epoch==3.
How severe is CVE-2020-24944?: CVE-2020-24944 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-2020-24944 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-24944?: CVE-2020-24944 affects Privateoctopus Picoquic. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-24944?: 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-2020-24944 published?: CVE-2020-24944 was published on 2021-02-08 and last updated on 2026-06-17.

References

https://github.com/private-octopus/picoquic/issues/969

Affected products (1)

cpe:2.3:a:privateoctopus:picoquic:*:*:*:*:*:*:*:*

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