CVE-2008-4392

dnscache in Daniel J. Bernstein djbdns 1.05 does not prevent simultaneous identical outbound DNS queries, which makes it easier for remote attackers to spoof DNS responses, as demonstrated by a spoofed A record in the Additional section of a response to a Start of Authority (SOA) query.

Published: 2009-02-19 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-4392 is rated Moderate Risk (52.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.69%). EPSS rose +1.06% over the last day, indicating growing attacker interest. 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-2008-4392

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 0.64% 1.69% +1.06%
2 2025-03-30 1.22% 0.64% -0.59%
3 2025-03-29 — 1.22% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-4392

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/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:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2008-4392

OS Trackers for CVE-2008-4392

vendor priority summary link
debian high CVE-2008-4392 high priority: Debian including 1 source packages (djbdns), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2008-4392
ubuntu medium CVE-2008-4392 medium priority: Ubuntu including 1 source packages (djbdns), 39 status rows across 39 suites (artful, bionic, cosmic, dapper, disco, eoan, focal, groovy, gutsy, hardy, hirsute, impish, intrepid, jammy, jaunty, karmic, kinetic, lucid, lunar, mantic, maverick, natty, noble, oneiric, oracular, plucky, precise, quantal, questing, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): … (4 distinct statuses). https://ubuntu.com/security/CVE-2008-4392

Affected software / configurations for CVE-2008-4392

Vendor Product Version Raw CPE
d.j.bernstein djbdns 1.05 cpe:2.3:a:d.j.bernstein:djbdns:1.05:*:*:*:*:*:*:*

References for CVE-2008-4392

cvelogic Threat Intelligence