HIGH

CVE-2026-25800

CVSS v3

7.5

HIGH

EPSS Score

0.3%

exploit probability

CISA KEV

No

known exploited

Exploitation

SSVC status

Description

Quinn is a pure-Rust, async-compatible implementation of the IETF QUIC transport protocol. Starting in version 0.1.0 and prior to version 0.11.15, the `Assembler` component that assembles unordered stream fragments into consecutive chunks of the stream incurs some overhead for non-contiguous fragments. Readers that read from a `RecvStream` in order (through an `AsyncRead` impl for example) will be sensitive to peers that send fragments while leaving out early parts of the stream, and in particul

Technical details

CVSS v3 Vector
3.1
Published
7/23/2026
Last Modified
7/23/2026

Frequently asked questions

What is CVE-2026-25800?

Quinn is a pure-Rust, async-compatible implementation of the IETF QUIC transport protocol. Starting in version 0.1.0 and prior to version 0.11.15, the `Assembler` component that assembles unordered stream fragments into consecutive chunks of the stream incurs some overhead for non-contiguous fragments. Readers that read from a `RecvStream` in order (through an `AsyncRead` impl for example) will be sensitive to peers that send fragments while leaving out early parts of the stream, and in particul

Is CVE-2026-25800 actively exploited?

Active exploitation of CVE-2026-25800 has not been confirmed. The EPSS score is 0.3%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-25800?

CVE-2026-25800 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string 3.1.

Is CVE-2026-25800 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.