🛡️ CVE-2026-35085 — universal-gateway-firmware

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: Low — an ordinary user account is enough.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: High — total loss, or loss the attacker controls.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2026-35085 is classified as CWE-121: Stack-based Buffer Overflow. An oversized write to a stack buffer overwrites saved state such as return addresses, which can redirect execution.

Affected software

CVE-2026-35085 is recorded against 1 package.

• universal-gateway-firmware (fixed in 6_00_07)

Timeline and source

Published on 3 June 2026 and last revised on 22 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

www.certvde.com

Other advisories for this package

universal-gateway-firmware has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-35075 (9.8 Critical, published 3 Jun 2026)
• CVE-2026-35081 (8.1 High, published 3 Jun 2026)
• CVE-2026-35080 (8.1 High, published 3 Jun 2026)
• CVE-2026-35079 (8.1 High, published 3 Jun 2026)
• CVE-2026-35078 (8.1 High, published 3 Jun 2026)
• CVE-2026-35084 (8.8 High, published 3 Jun 2026)
• CVE-2026-35077 (8.1 High, published 3 Jun 2026)
• CVE-2026-35083 (8.8 High, published 3 Jun 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-121: Stack-based Buffer Overflow) in other software:

• CVE-2023-28760 (7.5 High, published 2 Oct 2025)
• CVE-2022-32502 (6.3 Medium, published 14 May 2024)
• CVE-2023-32136 (8.8 High, published 3 May 2024)
• CVE-2023-27346 (8.8 High, published 3 May 2024)
• CVE-2023-32149 (8.8 High, published 3 May 2024)
• CVE-2023-27333 (6.8 Medium, published 3 May 2024)
• CVE-2023-32146 (8.8 High, published 3 May 2024)
• CVE-2023-27332 (8.8 High, published 3 May 2024)

Details

Affected Packages

References