Public vulnerability disclosure

CVE-2026-107441

CVE-2026-107441

publishedCWE-787

An out-of-bounds write vulnerability in the CGI program of Zyxel GS1900-24E firmware versions through 2.90(AAHK.2)C0 could allow an unauthenticated adjacent attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

Technical severity8.8 highCVSS 3.1 · CNA: Zyxel
Published2026-11-03Source updated 2026-11-03
Collected2026-11-031 attributed source

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

Affected products, source version ranges and reporting authorities
ProductVersionsAuthority
GS1900-24E firmware
Zyxel
<= 2.90(AAHK.2)C0 (affected)
Other versions: unaffected
CNA: Zyxel
GS1900-8 firmware
Zyxel
<= 2.90(AAHH.2)C0 (affected)
Other versions: unaffected
CNA: Zyxel
GS1900-8HP firmware
Zyxel
<= 2.90(AAHI.2)C0 (affected)
Other versions: unaffected
CNA: Zyxel
GS1900-10HP firmware
Zyxel
<= 2.90(AAZI.2)C0 (affected)
Other versions: unaffected
CNA: Zyxel
GS1900-16 firmware
Zyxel
<= 2.90(AAHJ.2)C0 (affected)
Other versions: unaffected
CNA: Zyxel
GS1900-24 firmware
Zyxel
<= 2.90(AAHL.2)C0 (affected)
Other versions: unaffected
CNA: Zyxel
GS1900-24EP firmware
Zyxel
<= 2.90(ABTO.2)C0 (affected)
Other versions: unaffected
CNA: Zyxel
GS1900-HPv2 firmware
Zyxel
<= 2.90(ABTP.2)C0 (affected)
Other versions: unaffected
CNA: Zyxel
GS1900-48 firmware
Zyxel
<= 2.90(AAHN.2)C0 (affected)
Other versions: unaffected
CNA: Zyxel
GS1900-48HPv2 firmware
Zyxel
<= 2.90(ABTQ.2)C0 (affected)
Other versions: unaffected
CNA: Zyxel

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / scoreVectorAuthority
3.1 / 8.8
high
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCNA: Zyxel

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

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