CVE catalog

CVE-2022-39173

wolfssl: CVE-2022-39173

Severity: Medium
Source: [NVD] · [CVE record]
EPSS: 5.76% · Oct 25, 2026

In wolfSSL before 5.5.1, malicious clients can cause a buffer overflow during a TLS 1.3 handshake. This occurs when an attacker supposedly resumes a previous TLS session. During the resumption Client Hello a Hello Retry Request must be triggered. Both Client Hellos are required to contain a list of duplicate cipher suites to trigger the buffer overflow. In total, two Client Hellos have to be sent: one in the resumed session, and a second one as a response to a Hello Retry Request message.

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	`5.5.3-1`	not yet assigned	Not reported	[1021021]
Debian	wolfssl	source	trixie	`5.5.3-1`	not yet assigned	Not reported	[1021021]
Debian	wolfssl	source	bookworm	`5.5.3-1`	not yet assigned	Not reported	[1021021]

[Debian bug #1021021]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libwolfssl35]Fixed
Source package: [wolfssl]
Details (4)
- 5.5.4-2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
- 5.5.4-2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
- 5.5.4-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
- 5.5.4-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
[libwolfssl-dev]Fixed
Source package: [wolfssl]
Details (4)
- 5.5.4-2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
- 5.5.4-2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
- 5.5.4-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
- 5.5.4-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm

Observed: Oct 23, 2026, 6:29:32 PM UTC

References

[https://security-tracker.debian.org/tracker/CVE-2022-39173]

[Debian Security Tracker] · [FIRST EPSS]