CVE-2012-1836

Exp

Heap-based buffer overflow in dns.cpp in InspIRCd 2.0.5 might allow remote attackers to execute arbitrary code via a crafted DNS query that uses compression.

Published: 2012-03-22 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-1836 is rated High Exploit Risk (78.2/100): CVSS High severity, with high exploitation likelihood (EPSS 6.90%, 93th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2012-1836

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2012-1836

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 6.35% 6.90% +0.54%
2 2026-02-11 7.42% 6.35% -1.07%
3 2025-03-30 — 7.42% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-1836

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/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:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2012-1836

OS Trackers for CVE-2012-1836

vendor priority summary link
debian not yet assigned CVE-2012-1836 not yet assigned priority: Debian including 1 source packages (inspircd), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2012-1836
gentoo high CVE-2012-1836: 1 GLSA(s) (201204-02), 1 atom(s) (net-irc/inspircd); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2012-1836
ubuntu medium CVE-2012-1836 medium priority: Ubuntu including 1 source packages (inspircd), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): released 4, ignored 2. https://ubuntu.com/security/CVE-2012-1836

Affected software / configurations for CVE-2012-1836

Vendor Product Version Raw CPE
inspircd inspircd 2.0.5 cpe:2.3:a:inspircd:inspircd:2.0.5:*:*:*:*:*:*:*

References for CVE-2012-1836

cvelogic Threat Intelligence