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CVE-2012-1836

27
FAUCET Score

CVE-2012-1836 describes a heap-based buffer overflow in InspIRCd 2.0.5, specifically within the dns.cpp component. This vulnerability, rated with a CVSS score of 7.5, allows remote unauthenticated attackers to potentially execute arbitrary code by sending a specially crafted DNS query utilizing compression. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.0.5CPE matchmatch criteria
cpe:2.3:a:inspircd:inspircd:2.0.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
6.90%
Probability of exploitation in next 30 days
EPSS Percentile
93.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0690 is in the 89th percentile among its peer group of 51,466 CVEs.

Social Chatter

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.

Media 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

osvdb.org / 80263
secunia.com / advisories/48474
exchange.xforce.ibmcloud.com / vulnerabilities/74157
github.com / inspircd/inspircd/commit/fe7dbd2c104c37f6f3af7d9f1646a3c332aea4a4
ExploitPatch
debian.org / security/2012/dsa-2448
kb.cert.org / vuls/id/212651
PatchUS Government Resource
securityfocus.com / bid/52561