CVE-2026-10740CWE-770

Excessive memory allocation in s2n-quic

Medium · published June 10, 2026

CVSS v4.0
6.9
EPSS
0%
Percentile
20.6
In the wild
Unconfirmed
What it is

Unbounded memory allocation in the CRYPTO frame reassembler in s2n-quic before 1.8.2 may allow an unauthenticated remote actor to cause a denial of service (degraded availability) by sending crafted QUIC Initial packets.

To remediate this issue, users should upgrade to v1.8.2.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
EPSS
0.00291 · 20.6th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-06-10T18:09Z
EPSS history
Timeline
  • 10 JUN 18:09Z
    Excessive memory allocation in s2n-quic
    cvelistv5