CVE-2026-0392 eParakstītājs 3.0 for Windows – remote code execution via unauthenticated auto-update
Man-in-the-middle attackers can execute arbitrary code by serving malicious updates due to missing certificate and signature validation in the auto-update mechanism.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-0392?
CVE-2026-0392 is a high-severity code injection vulnerability in Latvijas Valsts radio un televīzijas centrs (LVRTC) eParakstītājs 3.0, published on 3 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Which versions are affected by CVE-2026-0392?
How do I fix CVE-2026-0392?
No fix has been published for CVE-2026-0392 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-0392 being exploited?
There is no known exploitation of CVE-2026-0392 in the wild and no public exploit code.
Sources
Also known as GHSA-gw22-gf8m-29g5.