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6 vulnerabilities found for GS1900-8 Firmware by Zyxel
CVE-2026-7273 (GCVE-0-2026-7273)
Vulnerability from nvd – Published: 2026-06-16 02:20 – Updated: 2026-06-18 03:55
VLAI
EPSS
VEX
Summary
A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-121 - Stack-based buffer overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zyxel.com/global/en/support/security-… | vendor-advisory |
Impacted products
10 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | GS1900-48HPv2 firmware |
Affected:
<= 2.90(ABTQ.1)C0
|
|
| Zyxel | GS1900-8 firmware |
Affected:
<= 2.90(AAHH.1)C0
|
|
| Zyxel | GS1900-8HP firmware |
Affected:
<= 2.90(AAHI.1)C0
|
|
| Zyxel | GS1900-10HP firmware |
Affected:
<= 2.90(AAZI.1)C0
|
|
| Zyxel | GS1900-16 firmware |
Affected:
<= 2.90(AAHJ.1)C0
|
|
| Zyxel | GS1900-24 firmware |
Affected:
<= 2.90(AAHL.1)C0
|
|
| Zyxel | GS1900-24E firmware |
Affected:
<= 2.90(AAHK.1)C0
|
|
| Zyxel | GS1900-24EP firmware |
Affected:
<= 2.90(ABTO.1)C0
|
|
| Zyxel | GS1900-24HPv2 firmware |
Affected:
<= 2.90(ABTP.1)C0
|
|
| Zyxel | GS1900-48 firmware |
Affected:
<= 2.90(AAHN.1)C0
|
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CVE-2022-45853 (GCVE-0-2022-45853)
Vulnerability from nvd – Published: 2023-05-30 10:02 – Updated: 2025-01-10 17:32
VLAI
EPSS
VEX
Summary
The privilege escalation vulnerability in the Zyxel GS1900-8 firmware version
V2.70(AAHH.3) and the GS1900-8HP firmware version V2.70(AAHI.3) could allow an authenticated, local attacker with administrator privileges to execute some system commands as 'root' on a vulnerable device via SSH.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | GS1900-8HP firmware |
Affected:
V2.70(AAHI.3)
|
|
| Zyxel | GS1900-8 firmware |
Affected:
V2.70(AAHH.3)
|
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CVE-2021-35030 (GCVE-0-2021-35030)
Vulnerability from nvd – Published: 2021-07-26 11:20 – Updated: 2024-09-17 01:46
VLAI
EPSS
VEX
Summary
A vulnerability was found in the CGI program in Zyxel GS1900-8 firmware version V2.60, that did not properly sterilize packet contents and could allow an authenticated, local user to perform a cross-site scripting (XSS) attack via a crafted LLDP packet.
Severity
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zyxel.com/support/Zyxel_security_advi… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | GS1900-8 Firmware |
Affected:
2.60
|
Date Public
2021-07-27 00:00
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CVE-2026-7273 (GCVE-0-2026-7273)
Vulnerability from cvelistv5 – Published: 2026-06-16 02:20 – Updated: 2026-06-18 03:55
VLAI
EPSS
VEX
Summary
A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-121 - Stack-based buffer overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zyxel.com/global/en/support/security-… | vendor-advisory |
Impacted products
10 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | GS1900-48HPv2 firmware |
Affected:
<= 2.90(ABTQ.1)C0
|
|
| Zyxel | GS1900-8 firmware |
Affected:
<= 2.90(AAHH.1)C0
|
|
| Zyxel | GS1900-8HP firmware |
Affected:
<= 2.90(AAHI.1)C0
|
|
| Zyxel | GS1900-10HP firmware |
Affected:
<= 2.90(AAZI.1)C0
|
|
| Zyxel | GS1900-16 firmware |
Affected:
<= 2.90(AAHJ.1)C0
|
|
| Zyxel | GS1900-24 firmware |
Affected:
<= 2.90(AAHL.1)C0
|
|
| Zyxel | GS1900-24E firmware |
Affected:
<= 2.90(AAHK.1)C0
|
|
| Zyxel | GS1900-24EP firmware |
Affected:
<= 2.90(ABTO.1)C0
|
|
| Zyxel | GS1900-24HPv2 firmware |
Affected:
<= 2.90(ABTP.1)C0
|
|
| Zyxel | GS1900-48 firmware |
Affected:
<= 2.90(AAHN.1)C0
|
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CVE-2022-45853 (GCVE-0-2022-45853)
Vulnerability from cvelistv5 – Published: 2023-05-30 10:02 – Updated: 2025-01-10 17:32
VLAI
EPSS
VEX
Summary
The privilege escalation vulnerability in the Zyxel GS1900-8 firmware version
V2.70(AAHH.3) and the GS1900-8HP firmware version V2.70(AAHI.3) could allow an authenticated, local attacker with administrator privileges to execute some system commands as 'root' on a vulnerable device via SSH.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | GS1900-8HP firmware |
Affected:
V2.70(AAHI.3)
|
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| Zyxel | GS1900-8 firmware |
Affected:
V2.70(AAHH.3)
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CVE-2021-35030 (GCVE-0-2021-35030)
Vulnerability from cvelistv5 – Published: 2021-07-26 11:20 – Updated: 2024-09-17 01:46
VLAI
EPSS
VEX
Summary
A vulnerability was found in the CGI program in Zyxel GS1900-8 firmware version V2.60, that did not properly sterilize packet contents and could allow an authenticated, local user to perform a cross-site scripting (XSS) attack via a crafted LLDP packet.
Severity
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zyxel.com/support/Zyxel_security_advi… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | GS1900-8 Firmware |
Affected:
2.60
|
Date Public
2021-07-27 00:00
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