CVE-2014-4883

resolv.c in the DNS resolver in uIP, and dns.c in the DNS resolver in lwIP 1.4.1 and earlier, does not use random values for ID fields and source ports of DNS query packets, which makes it easier for man-in-the-middle attackers to conduct cache-poisoning attacks via spoofed reply packets.

Published: 2014-11-28 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-4883 is rated Low Risk (26.6/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.11%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2014-4883

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 2025-04-05 0.21% 0.11% -0.09%
2 2025-03-17 0.09% 0.21% +0.12%
3 2023-03-07 — 0.09% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-4883

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2014-4883

OS Trackers for CVE-2014-4883

vendor priority summary link
debian unimportant CVE-2014-4883 unimportant priority: Debian including 1 source packages (xen), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2014-4883
ubuntu medium CVE-2014-4883 medium priority: Ubuntu including 1 source packages (lwipv6), 27 status rows across 27 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lucid, lunar, mantic, noble, oracular, plucky, precise, questing, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 19, needed 6, DNE 1, needs-triage 1. https://ubuntu.com/security/CVE-2014-4883

Affected software / configurations for CVE-2014-4883

Vendor Product Version Raw CPE
lwip_project lwip <= 1.4.1 cpe:2.3:a:lwip_project:lwip:*:*:*:*:*:*:*:*

References for CVE-2014-4883

cvelogic Threat Intelligence