Extreme Networks EXOS before v.22.7 and before v.30.2 was discovered to contain an issue…
Priority HIGH 70CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
Extreme Networks EXOS before v.22.7 and before v.30.2 was discovered to contain an issue in its Web GUI which fails to restrict URL access, allowing attackers to access sensitive information or escalate privileges.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00703 53rd percentileScored 2026-11-08
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:extremenetworks:extremexos:*:*:*:*:*:*:*:* | before 22.7 | Vulnerable | Extreme Networks |
| cpe:2.3:o:extremenetworks:extremexos:30.1:*:*:*:*:*:*:* | 30.1 | Vulnerable | Extreme Networks |
- cpe:2.3:o:extremenetworks:extremexos:*:*:*:*:*:*:*:* Versions before 22.7 Vulnerable ·Extreme Networks
- cpe:2.3:o:extremenetworks:extremexos:30.1:*:*:*:*:*:*:* Versions 30.1 Vulnerable ·Extreme Networks
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-18305
- 2026-10-03 Alias added: GHSA-g9vx-vfc5-9mgj
References
More Extreme Networks Extremexos vulnerabilities
- TI-2024-18270 In Extreme XOS through 22.6.1.4, a read-only user can escalate privileges to root via a… CVSS 3.1HIGH 8.6
- TI-2017-10452 Extreme EXOS 15.7, 16.x, 21.x, and 22.x allows remote attackers to hijack sessions by determining SessionID values. CVSS 3.0HIGH 8.1
- TI-2017-10448 Extreme EXOS 15.7, 16.x, 21.x, and 22.x allows remote attackers to trigger a buffer overflow leading to a reboot. CVSS 3.1HIGH 7.5
- TI-2017-10451 Extreme EXOS 16.x, 21.x, and 22.x allows administrators to bypass the "exsh restricted… CVSS 3.0MEDIUM 6.7
- TI-2017-10450 Extreme EXOS 16.x, 21.x, and 22.x allows administrators to obtain a root shell via… CVSS 3.0MEDIUM 6.7
- TI-2017-10449 Extreme EXOS 16.x, 21.x, and 22.x allows administrators to obtain a root shell via… CVSS 3.0MEDIUM 6.7
Sources
- CVE-2020-18305 · CVE Program
- CVE-2020-18305 · NVD
- FIRST EPSS
- GHSA-g9vx-vfc5-9mgj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences