CVE catalog

CVE-2021-24116

wolfssl: CVE-2021-24116

Severity: Medium
Published: Jul 14, 2021, 1:15:08 PM UTC
Source: [NVD] · [CVE record]
EPSS: 1.19% · Oct 25, 2026

In wolfSSL through 4.6.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.

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	[991663]
Debian	wolfssl	source	trixie	`4.6.0-1`	not yet assigned	Not reported	[991663]
Debian	wolfssl	source	bookworm	`4.6.0-1`	not yet assigned	Not reported	[991663]

[Debian bug #991663]

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, 5:55:05 PM UTC

References

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