CVE-2023-43902
NVD-CWE-noinfoPublished: November 14, 2023· Updated: Jun 17, 2026
Official Description
Incorrect access control in the Forgot Your Password function of EMSigner v2.8.7 allows unauthenticated attackers to access accounts of all registered users, including those with administrator privileges via a crafted password reset token.
Risk Analysis
EMSigner v2.8.7 contains an incorrect access control flaw in its password reset function. This allows unauthenticated attackers to hijack any user account, including administrative ones, by using a crafted token, resulting in a critical CVSS score of 9.8.
There is no known public exploit for this vulnerability, which is remotely exploitable due to its network-based vector and low complexity.
Users should upgrade to a patched version of EMSigner if available and monitor for unauthorized account access.
Technical Analysis
CVE-2023-43902 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.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (NVD-CWE-noinfo)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-43902 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts