Is CVE-2023-49208 actively exploited?

No active exploitation of CVE-2023-49208 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-49208 be exploited remotely?

Yes. CVE-2023-49208 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-49208?

CVE-2023-49208 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-49208

CRITICAL

CVE-2023-49208

CWE-120Published: November 23, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

scheme/webauthn.c in Glewlwyd SSO server before 2.7.6 has a possible buffer overflow during FIDO2 credentials validation in webauthn registration.

NVD Source

Risk Analysis

Glewlwyd SSO server is susceptible to a buffer overflow during FIDO2 credential validation. This critical flaw could allow remote attackers to crash the service or potentially execute arbitrary code.

No public exploit is known, and it is not in the CISA KEV. It is remotely exploitable with low attack complexity.

Recommended Action

Upgrade to Glewlwyd SSO server version 2.7.6 or later.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-49208 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.