CVE-2008-4383

Stack-based buffer overflow in the Agranet-Emweb embedded management web server in Alcatel OmniSwitch OS7000, OS6600, OS6800, OS6850, and OS9000 Series devices with AoS 5.1 before 5.1.6.463.R02, 5.4 before 5.4.1.429.R01, 6.1.3 before 6.1.3.965.R01, 6.1.5 before 6.1.5.595.R01, and 6.3 before 6.3.1.966.R01 allows remote attackers to execute arbitrary code via a long Session cookie.

Published: 2008-10-03 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-4383 is rated High Risk (68.7/100): CVSS Critical severity, with high exploitation likelihood (EPSS 17.61%, 95th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2008-4383

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-04 22.20% 17.61% -4.59%
2 2025-11-23 27.07% 22.20% -4.88%
3 2025-03-30 — 27.07% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-4383

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2008-4383

Affected software / configurations for CVE-2008-4383

Vendor Product Version Raw CPE
alcatel aos >= 5.1, < 5.1.6.463.r02 cpe:2.3:o:alcatel:aos:*:*:*:*:*:*:*:*
alcatel aos >= 5.4, < 5.4.1.429.r01 cpe:2.3:o:alcatel:aos:*:*:*:*:*:*:*:*
alcatel aos >= 6.1.3, < 6.1.3.965.r01 cpe:2.3:o:alcatel:aos:*:*:*:*:*:*:*:*
alcatel aos >= 6.1.5, < 6.1.5.595.r01 cpe:2.3:o:alcatel:aos:*:*:*:*:*:*:*:*
alcatel aos >= 6.3, < 6.3.1.966.r01 cpe:2.3:o:alcatel:aos:*:*:*:*:*:*:*:*

References for CVE-2008-4383

cvelogic Threat Intelligence