CVE-2003-0850

The TCP reassembly functionality in libnids before 1.18 allows remote attackers to cause "memory corruption" and possibly execute arbitrary code via "overlarge TCP packets."

Published: 2003-11-17 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2003-0850 is rated Moderate Risk (61.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.68%). Review affected assets and schedule 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-2003-0850

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 2.76% 3.68% +0.92%
2 2025-03-30 6.87% 2.76% -4.11%
3 2025-03-29 — 6.87% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2003-0850

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/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:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2003-0850

OS Trackers for CVE-2003-0850

vendor priority summary link
debian not yet assigned CVE-2003-0850 not yet assigned priority: Debian including 1 source packages (libnids), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2003-0850
ubuntu medium CVE-2003-0850 medium priority: Ubuntu including 1 source packages (libnids), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): released 3, needs-triage 1. https://ubuntu.com/security/CVE-2003-0850

Affected software / configurations for CVE-2003-0850

Vendor Product Version Raw CPE
dug_song dsniff 2.3 cpe:2.3:a:dug_song:dsniff:2.3:*:*:*:*:*:*:*
rafal_wojtczuk libnids 1.11 cpe:2.3:a:rafal_wojtczuk:libnids:1.11:*:*:*:*:*:*:*
rafal_wojtczuk libnids 1.12 cpe:2.3:a:rafal_wojtczuk:libnids:1.12:*:*:*:*:*:*:*
rafal_wojtczuk libnids 1.13 cpe:2.3:a:rafal_wojtczuk:libnids:1.13:*:*:*:*:*:*:*
rafal_wojtczuk libnids 1.14 cpe:2.3:a:rafal_wojtczuk:libnids:1.14:*:*:*:*:*:*:*
rafal_wojtczuk libnids 1.16 cpe:2.3:a:rafal_wojtczuk:libnids:1.16:*:*:*:*:*:*:*
rafal_wojtczuk libnids 1.17 cpe:2.3:a:rafal_wojtczuk:libnids:1.17:*:*:*:*:*:*:*

References for CVE-2003-0850

cvelogic Threat Intelligence