CVE catalog

CVE-2020-36177

wolfssl: CVE-2020-36177

Severity: Critical · CVSS 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: Jan 6, 2021, 4:15:12 PM UTC
Source: [NVD] · [CVE record]
EPSS: 3.57% · Oct 25, 2026

RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an out-of-bounds write for certain relationships between key size and digest size.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	wolfssl	sid	`5.9.2-1.2`	fixed
Debian	wolfssl	trixie	`5.7.2-0.1+deb13u2`	fixed
Debian	wolfssl	bookworm	`5.5.4-2+deb12u2`	fixed
Debian	wolfssl	bookworm-security	`5.5.4-2+deb12u3`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	wolfssl	source	sid	`4.6.0-1`	not yet assigned	Not reported	[979534]
Debian	wolfssl	source	trixie	`4.6.0-1`	not yet assigned	Not reported	[979534]
Debian	wolfssl	source	bookworm	`4.6.0-1`	not yet assigned	Not reported	[979534]

[Debian bug #979534]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libwolfssl35]Fixed
Source package: [wolfssl]
Details (4)
- 5.5.4-2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 4.6.0-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 4.6.0-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 4.6.0-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 4.6.0-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
[libwolfssl-dev]Fixed
Source package: [wolfssl]
Details (4)
- 5.5.4-2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 4.6.0-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 4.6.0-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 4.6.0-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 4.6.0-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12

[Debian 13 (Trixie)]

[libwolfssl42t64]Fixed
Source package: [wolfssl]
Details (2)
- 5.7.2-0.1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 4.6.0-1
  dsa · wolfssl · debian · 13
- 5.7.2-0.1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 4.6.0-1
  dsa · wolfssl · debian · 13
[libwolfssl-dev]Fixed
Source package: [wolfssl]
Details (2)
- 5.7.2-0.1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 4.6.0-1
  dsa · wolfssl · debian · 13
- 5.7.2-0.1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 4.6.0-1
  dsa · wolfssl · debian · 13

Observed: Oct 23, 2026, 5:51:40 PM UTC

References

[CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]