CVE-2008-5421

Exp

The SSL web administration service in NetWin SmsGate 1.1n and earlier allows remote attackers to cause a denial of service (hang) via (1) a large integer in the Content-Length HTTP header; (2) an invalid value in the Content-Length HTTP header, as demonstrated by a negative integer; or (3) a missing Content-Length HTTP header.

Published: 2008-12-11 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-5421 is rated High Exploit Risk (60.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.44%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2008-5421

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2008-5421

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 2026-06-15 0.50% 1.44% +0.93%
2 2025-03-30 0.55% 0.50% -0.05%
3 2025-03-29 — 0.55% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-5421

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P 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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2008-5421

Affected software / configurations for CVE-2008-5421

Vendor Product Version Raw CPE
netwin smsgate <= 1.1n cpe:2.3:a:netwin:smsgate:*:*:*:*:*:*:*:*
netwin smsgate 1.0a cpe:2.3:a:netwin:smsgate:1.0a:*:*:*:*:*:*:*
netwin smsgate 1.0c cpe:2.3:a:netwin:smsgate:1.0c:*:*:*:*:*:*:*
netwin smsgate 1.0h cpe:2.3:a:netwin:smsgate:1.0h:*:*:*:*:*:*:*
netwin smsgate 1.0r cpe:2.3:a:netwin:smsgate:1.0r:*:*:*:*:*:*:*
netwin smsgate 1.0w cpe:2.3:a:netwin:smsgate:1.0w:*:*:*:*:*:*:*
netwin smsgate 1.1m cpe:2.3:a:netwin:smsgate:1.1m:*:*:*:*:*:*:*

References for CVE-2008-5421

cvelogic Threat Intelligence