CVE-2026-0392: eParakstītājs 3.0 for Windows – remote code execution via unauthenticated auto-update

Severity: high (CVSS 7.3 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-03 · updated 2026-10-23
Weakness: CWE-295

Description

eParakstītājs 3.0 for Windows before version 1.10.0 retrieves and executes its automatic updates over a channel that is not authenticated or integrity-protected. On each launch the application fetches an update descriptor (XML) over TLS but accepts any TLS certificate (a permissive TrustManager and a HostnameVerifier that always returns true), does not verify any digital signature on the update descriptor, and does not verify the Authenticode signature or a checksum of the downloaded installer before running it. A man-in-the-middle attacker able to redirect www.eparaksts.lv can serve a crafted update descriptor pointing to an attacker-controlled executable, which the client downloads and executes, resulting in arbitrary code execution on the victim host.

Affected products

Latvijas Valsts radio un televīzijas centrs (LVRTC) eParakstītājs 3.0: before 1.10.0 — fixed in 1.10.0

How to fix

Upgrade to a fixed version: Latvijas Valsts radio un televīzijas centrs (LVRTC) eParakstītājs 3.0 1.10.0. Check the vendor advisory for mitigations.

References

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