# CVE-2026-122992: CVE-2026-122992

Status: published. Published: 2026-11-05. Updated: 2026-11-05.

In G4KLX DStarGateway and F4FXL DStarGateway before 7b75de6, dstarCallsignToAPRS in APRSUtils.cpp has an integer underflow via an empty RS-MS1A sender field.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- G4KLX / DStarGateway: ≥ bd3b8650c41d3537c2af1d2d32dcb5b9f2a1a754; < 7b75de605dca542a2953dd74c16f0eac96a8944e (affected, git). Source: CNA: mitre

## Severity and prioritization

- CVSS 4.0: 9.2 (critical); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H; source: CNA: mitre

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-191

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/g4klx/DStarGateway (CNA: mitre)

- https://github.com/F4FXL/DStarGateway/pull/71 (CNA: mitre)

- https://github.com/F4FXL/DStarGateway/blob/7b75de605dca542a2953dd74c16f0eac96a8944e/README.md?plain=1#L159-L161 (CNA: mitre)

## Provenance

- CNA: mitre: https://www.cve.org/CVERecord?id=CVE-2026-122992; retrieved 2026-11-05; source updated 2026-11-05

Revision: 1140897086add60a73e6ccb0096a607f766b1e425e049b7d8fa4a1c27b5a3d1c

Canonical: https://y2.dev/cve/CVE-2026-122992

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