CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-7273

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.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.02

EPSS Ranking 79.7%

CVSS Severity

CVSS v3 Score 8.8

Proposed Action

Zyxel GS1900 series switches contain a stack-based buffer overflow vulnerability in the CGI program which could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

Ransomware Campaign

Unknown

References

Products affected by CVE-2026-7273

Zyxel » Gs1900-10hp » Version: N/A

cpe:2.3:h:zyxel:gs1900-10hp:-
Zyxel » Gs1900-16 » Version: N/A

cpe:2.3:h:zyxel:gs1900-16:-
Zyxel » Gs1900-24 » Version: N/A

cpe:2.3:h:zyxel:gs1900-24:-
Zyxel » Gs1900-24e » Version: N/A

cpe:2.3:h:zyxel:gs1900-24e:-
Zyxel » Gs1900-24ep » Version: N/A

cpe:2.3:h:zyxel:gs1900-24ep:-
Zyxel » Gs1900-48 » Version: N/A

cpe:2.3:h:zyxel:gs1900-48:-
Zyxel » Gs1900-48hpv2 » Version: N/A

cpe:2.3:h:zyxel:gs1900-48hpv2:-
Zyxel » Gs1900-8hp » Version: N/A

cpe:2.3:h:zyxel:gs1900-8hp:-
Zyxel » Gs1900-10hp Firmware » Version: N/A

cpe:2.3:o:zyxel:gs1900-10hp_firmware:-
Zyxel » Gs1900-10hp Firmware » Version: 2.40

cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.40
Zyxel » Gs1900-10hp Firmware » Version: 2.50(aazi.0)c0

cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.50(aazi.0)c0
Zyxel » Gs1900-10hp Firmware » Version: 2.70

cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.70
Zyxel » Gs1900-10hp Firmware » Version: 2.70(aazi.0)-20211208

cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.70(aazi.0)-20211208
Zyxel » Gs1900-10hp Firmware » Version: 2.70(aazi.3)

cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.70(aazi.3)
Zyxel » Gs1900-10hp Firmware » Version: 2.70(aazi.3)c0

cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.70(aazi.3)c0
Zyxel » Gs1900-10hp Firmware » Version: 2.70(aazi.5)

cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.70(aazi.5)
Zyxel » Gs1900-10hp Firmware » Version: 2.80(aazi.0)

cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.80(aazi.0)
Zyxel » Gs1900-10hp Firmware » Version: 2.80(aazi.0)c0

cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.80(aazi.0)c0
Zyxel » Gs1900-10hp Firmware » Version: 2.80(aazi.1)c0

cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.80(aazi.1)c0
Zyxel » Gs1900-10hp Firmware » Version: 2.90(aazi.0)c0

cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.90(aazi.0)c0
Zyxel » Gs1900-10hp Firmware » Version: 2.90(aazi.1)c0

cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.90(aazi.1)c0
Zyxel » Gs1900-24 Firmware » Version: N/A

cpe:2.3:o:zyxel:gs1900-24_firmware:-
Zyxel » Gs1900-24 Firmware » Version: 2.40

cpe:2.3:o:zyxel:gs1900-24_firmware:2.40
Zyxel » Gs1900-24 Firmware » Version: 2.50(aahl.0)c0

cpe:2.3:o:zyxel:gs1900-24_firmware:2.50(aahl.0)c0
Zyxel » Gs1900-24 Firmware » Version: 2.70

cpe:2.3:o:zyxel:gs1900-24_firmware:2.70
Zyxel » Gs1900-24 Firmware » Version: 2.70(aahl.0)-20211208

cpe:2.3:o:zyxel:gs1900-24_firmware:2.70(aahl.0)-20211208
Zyxel » Gs1900-24 Firmware » Version: 2.70(aahl.3)

cpe:2.3:o:zyxel:gs1900-24_firmware:2.70(aahl.3)
Zyxel » Gs1900-24 Firmware » Version: 2.70(aahl.3)c0

cpe:2.3:o:zyxel:gs1900-24_firmware:2.70(aahl.3)c0
Zyxel » Gs1900-24 Firmware » Version: 2.70(aahl.5)

cpe:2.3:o:zyxel:gs1900-24_firmware:2.70(aahl.5)
Zyxel » Gs1900-24 Firmware » Version: 2.80(aahl.0)

cpe:2.3:o:zyxel:gs1900-24_firmware:2.80(aahl.0)
Zyxel » Gs1900-24 Firmware » Version: 2.80(aahl.0)c0

cpe:2.3:o:zyxel:gs1900-24_firmware:2.80(aahl.0)c0
Zyxel » Gs1900-24 Firmware » Version: 2.80(aahl.1)c0

cpe:2.3:o:zyxel:gs1900-24_firmware:2.80(aahl.1)c0
Zyxel » Gs1900-24 Firmware » Version: 2.90(aahl.0)c0

cpe:2.3:o:zyxel:gs1900-24_firmware:2.90(aahl.0)c0
Zyxel » Gs1900-24 Firmware » Version: 2.90(aahl.1)c0

cpe:2.3:o:zyxel:gs1900-24_firmware:2.90(aahl.1)c0
Zyxel » Gs1900-24ep Firmware » Version: 2.70

cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.70
Zyxel » Gs1900-24ep Firmware » Version: 2.70(abto.0)-20211208

cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.70(abto.0)-20211208
Zyxel » Gs1900-24ep Firmware » Version: 2.70(abto.3)

cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.70(abto.3)
Zyxel » Gs1900-24ep Firmware » Version: 2.70(abto.3)c0

cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.70(abto.3)c0
Zyxel » Gs1900-24ep Firmware » Version: 2.70(abto.5)

cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.70(abto.5)
Zyxel » Gs1900-24ep Firmware » Version: 2.80(abto.0)

cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.80(abto.0)
Zyxel » Gs1900-24ep Firmware » Version: 2.80(abto.0)c0

cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.80(abto.0)c0
Zyxel » Gs1900-24ep Firmware » Version: 2.80(abto.1)c0

cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.80(abto.1)c0
Zyxel » Gs1900-24ep Firmware » Version: 2.90(abto.0)c0

cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.90(abto.0)c0
Zyxel » Gs1900-24ep Firmware » Version: 2.90(abto.1)c0

cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.90(abto.1)c0
Zyxel » Gs1900-24hpv2 Firmware » Version: 2.70

cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.70
Zyxel » Gs1900-24hpv2 Firmware » Version: 2.70(aatp.0)-20211208

cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.70(aatp.0)-20211208
Zyxel » Gs1900-24hpv2 Firmware » Version: 2.70(abtp.3)

cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.70(abtp.3)
Zyxel » Gs1900-24hpv2 Firmware » Version: 2.70(abtp.3)c0

cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.70(abtp.3)c0
Zyxel » Gs1900-24hpv2 Firmware » Version: 2.70(abtp.5)

cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.70(abtp.5)
Zyxel » Gs1900-24hpv2 Firmware » Version: 2.80(abtp.0)

cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.80(abtp.0)
Zyxel » Gs1900-24hpv2 Firmware » Version: 2.80(abtp.0)c0

cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.80(abtp.0)c0
Zyxel » Gs1900-24hpv2 Firmware » Version: 2.80(abtp.1)c0

cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.80(abtp.1)c0
Zyxel » Gs1900-24hpv2 Firmware » Version: 2.90(abtp.0)c0

cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.90(abtp.0)c0
Zyxel » Gs1900-24hpv2 Firmware » Version: 2.90(abtp.1)c0

cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.90(abtp.1)c0
Zyxel » Gs1900-48 Firmware » Version: N/A

cpe:2.3:o:zyxel:gs1900-48_firmware:-
Zyxel » Gs1900-48 Firmware » Version: 2.40

cpe:2.3:o:zyxel:gs1900-48_firmware:2.40
Zyxel » Gs1900-48 Firmware » Version: 2.50(aahn.0)c0

cpe:2.3:o:zyxel:gs1900-48_firmware:2.50(aahn.0)c0
Zyxel » Gs1900-48 Firmware » Version: 2.70

cpe:2.3:o:zyxel:gs1900-48_firmware:2.70
Zyxel » Gs1900-48 Firmware » Version: 2.70(aahn.0)-20211208

cpe:2.3:o:zyxel:gs1900-48_firmware:2.70(aahn.0)-20211208
Zyxel » Gs1900-48 Firmware » Version: 2.70(aahn.3)

cpe:2.3:o:zyxel:gs1900-48_firmware:2.70(aahn.3)
Zyxel » Gs1900-48 Firmware » Version: 2.70(aahn.3)c0

cpe:2.3:o:zyxel:gs1900-48_firmware:2.70(aahn.3)c0
Zyxel » Gs1900-48 Firmware » Version: 2.70(aahn.5)

cpe:2.3:o:zyxel:gs1900-48_firmware:2.70(aahn.5)
Zyxel » Gs1900-48 Firmware » Version: 2.80(aahn.0)

cpe:2.3:o:zyxel:gs1900-48_firmware:2.80(aahn.0)
Zyxel » Gs1900-48 Firmware » Version: 2.80(aahn.0)c0

cpe:2.3:o:zyxel:gs1900-48_firmware:2.80(aahn.0)c0
Zyxel » Gs1900-48 Firmware » Version: 2.80(aahn.1)c0

cpe:2.3:o:zyxel:gs1900-48_firmware:2.80(aahn.1)c0
Zyxel » Gs1900-48 Firmware » Version: 2.90(aahn.0)c0

cpe:2.3:o:zyxel:gs1900-48_firmware:2.90(aahn.0)c0
Zyxel » Gs1900-48 Firmware » Version: 2.90(aahn.1)c0

cpe:2.3:o:zyxel:gs1900-48_firmware:2.90(aahn.1)c0
Zyxel » Gs1900-8 Firmware » Version: N/A

cpe:2.3:o:zyxel:gs1900-8_firmware:-
Zyxel » Gs1900-8 Firmware » Version: 2.40

cpe:2.3:o:zyxel:gs1900-8_firmware:2.40
Zyxel » Gs1900-8 Firmware » Version: 2.50(aaho.0)c0

cpe:2.3:o:zyxel:gs1900-8_firmware:2.50(aaho.0)c0
Zyxel » Gs1900-8 Firmware » Version: 2.70

cpe:2.3:o:zyxel:gs1900-8_firmware:2.70
Zyxel » Gs1900-8 Firmware » Version: 2.70(aahh.0)-20211208

cpe:2.3:o:zyxel:gs1900-8_firmware:2.70(aahh.0)-20211208
Zyxel » Gs1900-8 Firmware » Version: 2.70(aahh.3)

cpe:2.3:o:zyxel:gs1900-8_firmware:2.70(aahh.3)
Zyxel » Gs1900-8 Firmware » Version: 2.70(aahh.3)c0

cpe:2.3:o:zyxel:gs1900-8_firmware:2.70(aahh.3)c0
Zyxel » Gs1900-8 Firmware » Version: 2.70(aahh.5)

cpe:2.3:o:zyxel:gs1900-8_firmware:2.70(aahh.5)
Zyxel » Gs1900-8 Firmware » Version: 2.80(aahh.0)

cpe:2.3:o:zyxel:gs1900-8_firmware:2.80(aahh.0)
Zyxel » Gs1900-8 Firmware » Version: 2.80(aahh.0)c0

cpe:2.3:o:zyxel:gs1900-8_firmware:2.80(aahh.0)c0
Zyxel » Gs1900-8 Firmware » Version: 2.80(aahh.1)c0

cpe:2.3:o:zyxel:gs1900-8_firmware:2.80(aahh.1)c0
Zyxel » Gs1900-8 Firmware » Version: 2.90(aahh.0)c0

cpe:2.3:o:zyxel:gs1900-8_firmware:2.90(aahh.0)c0
Zyxel » Gs1900-8 Firmware » Version: 2.90(aahh.1)c0

cpe:2.3:o:zyxel:gs1900-8_firmware:2.90(aahh.1)c0
Zyxel » Gs1900-8hp Firmware » Version: N/A

cpe:2.3:o:zyxel:gs1900-8hp_firmware:-
Zyxel » Gs1900-8hp Firmware » Version: 2.40

cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.40
Zyxel » Gs1900-8hp Firmware » Version: 2.50(aahi.0)c0

cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.50(aahi.0)c0
Zyxel » Gs1900-8hp Firmware » Version: 2.70

cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.70
Zyxel » Gs1900-8hp Firmware » Version: 2.70(aahi.0)-20211208

cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.70(aahi.0)-20211208
Zyxel » Gs1900-8hp Firmware » Version: 2.70(aahi.3)

cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.70(aahi.3)
Zyxel » Gs1900-8hp Firmware » Version: 2.70(aahi.3)c0

cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.70(aahi.3)c0
Zyxel » Gs1900-8hp Firmware » Version: 2.70(aahi.5)

cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.70(aahi.5)
Zyxel » Gs1900-8hp Firmware » Version: 2.80(aahi.0)

cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.80(aahi.0)
Zyxel » Gs1900-8hp Firmware » Version: 2.80(aahi.0)c0

cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.80(aahi.0)c0
Zyxel » Gs1900-8hp Firmware » Version: 2.80(aahi.1)c0

cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.80(aahi.1)c0
Zyxel » Gs1900-8hp Firmware » Version: 2.90(aahi.0)c0

cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.90(aahi.0)c0
Zyxel » Gs1900-8hp Firmware » Version: 2.90(aahi.1)c0

cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.90(aahi.1)c0

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-7273

Products

Pricing

Contact Us