CVE-2021-26529

The mg_tls_init function in Cesanta Mongoose HTTPS server 7.0 and 6.7-6.18 (compiled with mbedTLS support) is vulnerable to remote OOB write attack via connection request after exhausting memory pool.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 71.77%
Affected Products (NVD)
VendorProductVersion
cesantamongoose
6.7 ≤
𝑥
≤ 6.18
cesantamongoose
7.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
mongoose
forky
7.22+ds-1
fixed
sid
7.22+ds-1
fixed
swupdate
bookworm
2022.12+dfsg-4+deb12u2
fixed
bullseye
postponed
forky
2026.05.1+dfsg-1
fixed
sid
2026.05.1+dfsg-1
fixed
trixie
2024.12.1+dfsg-3+deb13u2
fixed
Common Weakness Enumeration
References
https://github.com/cesanta/mongoose/issues/1203
https://github.com/cesanta/mongoose/issues/1203