CVE-2011-4869 describes a denial-of-service vulnerability in Unbound DNS resolver versions prior to 1.4.13p2. Remote DNS servers can trigger a daemon crash by sending a malformed response lacking expected NSEC3 records when processing NSEC3-signed zones. This vulnerability has a high severity CVSS score of 7.8, indicating it can be exploited remotely with low complexity to cause a complete service disruption. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this decade-old vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 1.4.12CPE matchmatch criteria | cpe:2.3:a:unbound:unbound:*:*:*:*:*:*:*:* | ||
0.0CPE matchmatch criteria | cpe:2.3:a:unbound:unbound:0.0:*:*:*:*:*:*:* | ||
0.1CPE matchmatch criteria | cpe:2.3:a:unbound:unbound:0.1:*:*:*:*:*:*:* | ||
0.2CPE matchmatch criteria | cpe:2.3:a:unbound:unbound:0.2:*:*:*:*:*:*:* | ||
0.3CPE matchmatch criteria | cpe:2.3:a:unbound:unbound:0.3:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.