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CVE-2026-3549

Опубликовано: 19 мар. 2026
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS3: 9.8

Описание

Heap Overflow in TLS 1.3 ECH parsing. An integer underflow existed in ECH extension parsing logic when calculating a buffer length, which resulted in writing beyond the bounds of an allocated buffer. Note that in wolfSSL, ECH is off by default, and the ECH standard is still evolving.

РелизСтатусПримечание
devel

needs-triage

esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

needs-triage

esm-apps/jammy

needs-triage

esm-apps/noble

needs-triage

esm-apps/resolute

needs-triage

esm-apps/xenial

ignored

end of ESM support, was needs-triage
jammy

needs-triage

noble

needs-triage

Показывать по

EPSS

Процентиль: 39%
0.00487
Низкий

9.8 Critical

CVSS3

Связанные уязвимости

CVSS3: 9.8
nvd
5 месяцев назад

Heap Overflow in TLS 1.3 ECH parsing. An integer underflow existed in ECH extension parsing logic when calculating a buffer length, which resulted in writing beyond the bounds of an allocated buffer. Note that in wolfSSL, ECH is off by default, and the ECH standard is still evolving.

msrc
4 месяца назад

ECH parsing heap buffer overflow

CVSS3: 9.8
debian
5 месяцев назад

Heap Overflow in TLS 1.3 ECH parsing. An integer underflow existed in ...

CVSS3: 9.8
github
5 месяцев назад

Heap Overflow in TLS 1.3 ECH parsing. An integer underflow existed in ECH extension parsing logic when calculating a buffer length, which resulted in writing beyond the bounds of an allocated buffer. Note that in wolfSSL, ECH is off by default, and the ECH standard is still evolving.

EPSS

Процентиль: 39%
0.00487
Низкий

9.8 Critical

CVSS3