schpw.c in the kpasswd service in kadmind in MIT Kerberos 5 (aka krb5) before 1.11.3 does not properly validate UDP packets before sending responses, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged packet that triggers a communication loop, as demonstrated by krb_pingpong.nasl, a related issue to CVE-1999-0103.
Conclusion & alert: CVE-2002-2443 is rated Moderate Risk (47.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 6.49%, 93th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: 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.
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 | 15.01% | 6.49% | -8.53% |
| 2 | 2026-03-28 | 15.35% | 15.01% | -0.34% |
| 3 | 2026-03-21 | — | 15.35% | — |
Full EPSS history (19 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2002-2443 not yet assigned priority: Debian including 1 source packages (krb5), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2002-2443 |
gentoo
|
normal | CVE-2002-2443: 1 GLSA(s) (201312-12), 1 atom(s) (app-crypt/mit-krb5); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2002-2443 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2002-2443 |
suse
|
high | CVE-2002-2443 severity important: SUSE including 109 source package names (krb5-1.12.1-19.1, krb5-1.12.1-6.3, …), 204 product×package rows across 39 product lines (SUSE Linux Enterprise Desktop 11 SP2, SUSE Linux Enterprise Desktop 11 SP3, … (39 product lines)): Fixed 204. | https://www.suse.com/security/cve/CVE-2002-2443/ |
ubuntu
|
low | CVE-2002-2443 low priority: Ubuntu including 1 source packages (krb5), 7 status rows across 7 suites (lucid, precise, trusty, upstream, utopic, vivid, wily): not-affected 4, released 2, ignored 1. | https://ubuntu.com/security/CVE-2002-2443 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| mit | kerberos_5 | < 1.11.3 | cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:* |
| opensuse | opensuse | 11.4 | cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:* |
| opensuse | opensuse | 12.2 | cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:* |
| opensuse | opensuse | 12.3 | cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:* |
| fedoraproject | fedora | 17 | cpe:2.3:o:fedoraproject:fedora:17:*:*:*:*:*:*:* |
| fedoraproject | fedora | 18 | cpe:2.3:o:fedoraproject:fedora:18:*:*:*:*:*:*:* |
| fedoraproject | fedora | 19 | cpe:2.3:o:fedoraproject:fedora:19:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 5.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 6.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 5.9 | cpe:2.3:o:redhat:enterprise_linux_eus:5.9:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 6.4 | cpe:2.3:o:redhat:enterprise_linux_eus:6.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 5.0 | cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 6.0 | cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 6.4 | cpe:2.3:o:redhat:enterprise_linux_server_aus:6.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 5.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 6.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* |
| debian | debian_linux | 6.0 | cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:* |
| debian | debian_linux | 7.0 | cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 15.04 | cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 15.10 | cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* |