Zyxel GS1900-48hpv2 Firmware vulnerabilities

10 CVEs affecting Zyxel GS1900-48hpv2 Firmware, 1 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-7273, published 2026-06-16.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2026-7273: Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability, published 2026-06-16. High severity, CVSS 8.8. Actively exploited: in CISA KEV since 2026-09-21. EPSS: 2.5% chance of exploitation in the next 30 days. 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…
CVE-2024-8881, published 2024-11-12. Medium severity, CVSS 6.8. EPSS: 0.7% chance of exploitation in the next 30 days. A post-authentication command injection vulnerability in the CGI program in the Zyxel GS1900-48 switch firmware version V2.80(AAHN.1)C0 and earlier could allow an authenticated, LAN-based attacker…
CVE-2021-35031, published 2021-12-28. High severity, CVSS 8.0. EPSS: 0.5% chance of exploitation in the next 30 days. A vulnerability in the TFTP client of Zyxel GS1900 series firmware, XGS1210 series firmware, and XGS1250 series firmware, which could allow an authenticated LAN user to execute arbitrary OS commands…
CVE-2022-34746, published 2022-09-20. Medium severity, CVSS 5.9. EPSS: 0.4% chance of exploitation in the next 30 days. An insufficient entropy vulnerability caused by the improper use of randomness sources with low entropy for RSA key pair generation was found in Zyxel GS1900 series firmware versions prior to V2.70.…
CVE-2021-35030, published 2021-07-26. Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days. 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…
CVE-2024-8882, published 2024-11-12. Medium severity, CVSS 4.5. EPSS: 0.2% chance of exploitation in the next 30 days. A buffer overflow vulnerability in the CGI program in the Zyxel GS1900-48 switch firmware version V2.80(AAHN.1)C0 and earlier could allow an authenticated, LAN-based attacker with administrator…
CVE-2021-35032, published 2021-12-28. High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days. A vulnerability in the 'libsal.so' of the Zyxel GS1900 series firmware version 2.60 could allow an authenticated local user to execute arbitrary OS commands via a crafted function call.
CVE-2024-38270, published 2024-09-10. Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days. An insufficient entropy vulnerability caused by the improper use of a randomness function with low entropy for web authentication tokens generation exists in the Zyxel GS1900-10HP firmware version…
CVE-2023-35140, published 2023-11-07. Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days. The improper privilege management vulnerability in the Zyxel GS1900-24EP switch firmware version V2.70(ABTO.5) could allow an authenticated local user with read-only access to modify system settings…
CVE-2022-45853, published 2023-05-30. Medium severity, CVSS 6.7. EPSS: 0.2% chance of exploitation in the next 30 days. 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…