CVE-2025-8760 Details
Description
A vulnerability was identified in INSTAR 2K+ and 4K 3.11.1 Build 1124. This affects the function base64_decode of the component fcgi_server. The manipulation of the argument Authorization leads to buffer overflow. It is possible to initiate the attack remotely.
A buffer overflow vulnerability has been identified in the INSTAR 2K+ and 4K series cameras, specifically in version 3.11.1 Build 1124. The issue arises in the FCGI server component, where the 'base64_decode' function improperly handles Base64-encoded HTTP Basic Authentication headers. This vulnerability can be exploited remotely, without authentication, leading to full system compromise since the vulnerable binary runs with root privileges.
Users are advised to apply the firmware update released by INSTAR, which addresses this vulnerability. Additionally, implementing restrictive firewall rules can help mitigate the risk of exploitation.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Aug 13, 2025CISA-ADP
Assessed Aug 13, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://modzero.com/static/MZ-25-03_modzero_INSTAR.pdf | [email protected] | BundleRemedyTechnical Analysis |
| https://vuldb.com/?ctiid.319863 | [email protected] | AdvisoryPartial Content |
| https://vuldb.com/?id.319863 | [email protected] | AdvisoryPartial Content |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| INSTAR 2K+ | All versions |
CPE
Remediation
| |
| INSTAR 4K | All versions |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Aug 13, 2025 | New CVE Received | [email protected] |