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CVE-2012-3868

19
FAUCET Score

CVE-2012-3868 describes a race condition in ISC BIND 9.9.x before 9.9.1-P2, specifically within the ns_client structure management. This vulnerability allows remote attackers to cause a denial of service, leading to memory exhaustion or process termination, by sending a high volume of TCP queries. With a CVSS score of 4.3, it is considered medium severity, requiring medium attack complexity but no authentication, and primarily impacts availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
9.9.0CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.0:*:*:*:*:*:*:*
9.9.0CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.0:a1:*:*:*:*:*:*
9.9.0CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.0:a2:*:*:*:*:*:*
9.9.0CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.0:a3:*:*:*:*:*:*
9.9.0CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.0:b1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.72%
Probability of exploitation in next 30 days
EPSS Percentile
84.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0272 is in the 76th percentile among its peer group of 19,953 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2012-3868Important

bind: high TCP query load can trigger memory leak

Jul 24, 2012

References

kb.isc.org / article/AA-00730
Vendor Advisory
slackware.com / security/viewer.php