CVE-1999-1030

Exp

counter.exe 2.70 allows a remote attacker to cause a denial of service (hang) via an HTTP request that ends in %0A (newline), which causes a malformed entry in the counter log that produces an access violation.

Published: 1999-05-19 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-1030 is rated High Exploit Risk (64.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 4.72%). 2 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-1999-1030

EDB-ID Source Kind Published Link
19212 exploit_db edb 1999-05-19 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-1999-1030

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 2025-03-30 6.20% 4.72% -1.47%
2 2025-03-29 4.72% 6.20% +1.47%
3 2025-03-17 — 4.72% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-1030

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-1999-1030

Affected software / configurations for CVE-1999-1030

Vendor Product Version Raw CPE
behold_software web_page_counter 2.7 cpe:2.3:a:behold_software:web_page_counter:2.7:*:*:*:*:*:*:*

References for CVE-1999-1030

cvelogic Threat Intelligence