CVE-2026-19745: Denial of Service in Calix GigaSpire
CVE-2026-19745 is a medium severity denial of service vulnerability in Calix GigaSpire version 26.1.0. It affects the Web Management Interface component, specifically the utilities_configurationsave.cgi file. An attacker can remotely manipulate the sessionKey argument to cause a denial of service. The vendor has not responded to the disclosure, and no patch or mitigation guidance is currently available. Exploit code has been published but there are no known exploits in the wild.
AI Analysis
Technical Summary
This vulnerability in Calix GigaSpire 26.1.0 involves improper handling of the sessionKey argument in the utilities_configurationsave.cgi file of the Web Management Interface. Remote attackers can exploit this flaw to cause a denial of service condition. The vulnerability has a CVSS 4.0 base score of 5.3, indicating medium severity. The vendor was contacted but did not provide a response or patch. Exploit code is publicly available, increasing the risk of exploitation.
Potential Impact
Successful exploitation results in denial of service, potentially disrupting management interface availability. There is no indication of privilege escalation, data disclosure, or integrity impact. The attack can be performed remotely without user interaction and requires low privileges.
Mitigation Recommendations
No official fix or patch is currently available from the vendor. Users should monitor vendor communications for updates. Until a patch is released, consider restricting access to the Web Management Interface to trusted networks only to reduce exposure.
CVE-2026-19745: Denial of Service in Calix GigaSpire
Description
CVE-2026-19745 is a medium severity denial of service vulnerability in Calix GigaSpire version 26.1.0. It affects the Web Management Interface component, specifically the utilities_configurationsave.cgi file. An attacker can remotely manipulate the sessionKey argument to cause a denial of service. The vendor has not responded to the disclosure, and no patch or mitigation guidance is currently available. Exploit code has been published but there are no known exploits in the wild.
CVSS v4.0
Score 5.3medium
Affected software
Calix
GigaSpire
cpe:2.3:a:calix:gigaspire:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Calix GigaSpire 26.1.0 involves improper handling of the sessionKey argument in the utilities_configurationsave.cgi file of the Web Management Interface. Remote attackers can exploit this flaw to cause a denial of service condition. The vulnerability has a CVSS 4.0 base score of 5.3, indicating medium severity. The vendor was contacted but did not provide a response or patch. Exploit code is publicly available, increasing the risk of exploitation.
Potential Impact
Successful exploitation results in denial of service, potentially disrupting management interface availability. There is no indication of privilege escalation, data disclosure, or integrity impact. The attack can be performed remotely without user interaction and requires low privileges.
Mitigation Recommendations
No official fix or patch is currently available from the vendor. Users should monitor vendor communications for updates. Until a patch is released, consider restricting access to the Web Management Interface to trusted networks only to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-13T14:25:09.687Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a7e1a7dbf8831d539b18084
Added to database: 08/13/2026, 19:26:53 UTC
Last enriched: 08/21/2026, 13:35:58 UTC
Last updated: 09/26/2026, 01:47:40 UTC
Views: 44
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