UnrealIRCd 3.2.8.1, as distributed on certain mirror sites from November 2009 through June 2010, contains an externally introduced modification (Trojan Horse) in the DEBUG3_DOLOG_SYSTEM macro, which allows remote attackers to execute arbitrary commands.
CVE-2010-2075
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 7.5 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:P/I:P/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 83.5% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.
- High exploitation likelihood — EPSS 84%
- Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v2.0 (legacy)
- 7.5HIGHNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 7.5(low)
- EG Risk
- 72(Track)EG Risk 72/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation84% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 84%
- EPSS %ILE
- 100%
- KEV
- Not listed
Published
June 15, 2010
Last Modified
April 29, 2026
References (20)
- secalert@redhathttp://osvdb.org/65445
- secalert@redhathttp://seclists.org/fulldisclosure/2010/Jun/277
- secalert@redhathttp://seclists.org/fulldisclosure/2010/Jun/284
- secalert@redhathttp://secunia.com/advisories/40169
- secalert@redhathttp://security.gentoo.org/glsa/glsa-201006-21.xml
- secalert@redhathttp://www.exploit-db.com/exploits/13853
- secalert@redhathttp://www.openwall.com/lists/oss-security/2010/06/14/11
- secalert@redhathttp://www.securityfocus.com/bid/40820
- secalert@redhathttp://www.unrealircd.com/txt/unrealsecadvisory.20100612.txt
- secalert@redhathttp://www.vupen.com/english/advisories/2010/1437
- af854a3a-2127-422b-91ae-364da2661108http://osvdb.org/65445
- af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2010/Jun/277
- af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2010/Jun/284
- af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/40169
- af854a3a-2127-422b-91ae-364da2661108http://security.gentoo.org/glsa/glsa-201006-21.xml
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 2× in last 7d / 8× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-26 14:40 UTCEPSS rescore
- 2026-08-25 13:43 UTCEPSS rescore
- 2026-08-19 16:58 UTCEPSS rescore
- 2026-08-16 02:09 UTCEPSS rescore
- 2026-08-15 01:25 UTCEPSS rescore
- 2026-08-06 13:41 UTCEPSS rescore
- 2026-08-01 04:10 UTCEPSS rescore
- 2026-07-30 01:26 UTCEPSS rescore
- 2026-07-26 13:41 UTCEG score recompute▲ 7.50
- 2026-07-23 01:01 UTCEG score recompute
- 2026-07-23 00:38 UTCEG score recompute▼ 8.80
- 2026-07-23 00:06 UTCEG score recompute▲ 8.80
- 2026-07-22 21:45 UTCEG score recompute▼ 9.00
- 2026-07-22 14:03 UTCEPSS rescore
- 2026-07-22 14:03 UTCEPSS rescore
- 2026-07-21 15:20 UTCEPSS rescore
- 2026-07-20 17:03 UTCEPSS rescore
- 2026-07-15 16:54 UTCEPSS rescore
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- 2026-07-13 06:08 UTCEPSS rescore
- 2026-07-05 02:26 UTCEPSS rescore
- 2026-07-02 14:01 UTCEPSS rescore
- 2026-06-28 04:52 UTCEPSS rescore
- 2026-06-28 04:52 UTCEPSS rescore
- 2026-06-27 03:05 UTCEPSS rescore
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- 2026-06-24 14:02 UTCEPSS rescore
- 2026-06-24 14:02 UTCEPSS rescore
- 2026-06-23 21:30 UTCEPSS rescore
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- 2026-06-21 14:53 UTCEPSS rescore
- 2026-06-21 01:56 UTCEPSS rescore
- 2026-06-21 01:56 UTCEPSS rescore
- 2026-06-15 17:44 UTCEPSS rescore
- 2026-06-14 23:14 UTCEPSS rescore
- 2026-06-12 23:08 UTCEPSS rescore
- 2026-06-12 23:08 UTCEPSS rescore
- 2026-06-10 22:14 UTCEPSS rescore
- 2026-06-10 13:17 UTCEPSS rescore
- 2026-06-05 22:44 UTCEPSS rescore
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- 2026-06-05 06:07 UTCEPSS rescore
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- 2026-06-04 13:09 UTCEPSS rescore
- 2026-06-04 13:09 UTCEPSS rescore
- 2026-06-01 13:49 UTCEPSS rescore
- 2026-06-01 13:49 UTCEPSS rescore
- 2026-05-29 11:18 UTCEG score recompute
- 2026-05-29 11:18 UTCGHSA enrichment
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-27 13:38 UTCEPSS rescore
- 2026-05-27 13:38 UTCEPSS rescore
- 2026-05-26 07:16 UTCEPSS rescore
- 2026-05-26 07:16 UTCEPSS rescore
- 2026-05-22 21:15 UTCEPSS rescore
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- 2026-05-20 22:37 UTCEPSS rescore
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- 2026-05-20 22:37 UTCEPSS rescore
- 2026-05-20 11:21 UTCEPSS rescore
- 2026-05-20 11:21 UTCEPSS rescore
- 2026-05-18 21:29 UTCEPSS rescore
- 2026-05-18 21:29 UTCEPSS rescore
Publicly available exploits
(4 references)Working exploit code is in the public domain (1 Metasploit module) (1 GitHub PoC) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- GitHub PoCMFernstrom/OffensivePascal-CVE-2010-2075First seen May 28, 2022
FreePascal implementation of the UnrealIRCD CVE-2010-2075
Open source ↗ - Exploit-DBEDB-16922✓ verifiedFirst seen Dec 5, 2010
UnrealIRCd 3.2.8.1 - Backdoor Command Execution (Metasploit)
Open source ↗ - Exploit-DBEDB-13853✓ verifiedFirst seen Jun 13, 2010
UnrealIRCd 3.2.8.1 - Remote Downloader/Execute
Open source ↗ - Metasploitexploit/unix/irc/unreal_ircd_3281_backdoor✓ verifiedFirst seen Jun 12, 2010
UnrealIRCD 3.2.8.1 Backdoor Command Execution
Open source ↗
Related CVEs(same CWE)
Same CWE
10 shownCWE-20
- CVE-2005-0050EG 10.0EPSS p99HIGH
- CVE-2004-1019EG 10.0EPSS p94HIGH
- CVE-2004-0840EG 10.0EPSS p98HIGH
- CVE-2003-1425EG 10.0EPSS p96HIGH
- CVE-2003-1487EG 10.0EPSS p94HIGH
- CVE-2002-1874EG 10.0HIGH
- CVE-2002-2236EG 10.0EPSS p91HIGH
- CVE-2002-2365EG 10.0HIGH
- CVE-2002-1358EG 10.0EPSS p93HIGH
- CVE-2002-1359EG 10.0EPSS p100HIGH
Frequently asked(4)
What is CVE-2010-2075?
When was CVE-2010-2075 disclosed?
Is CVE-2010-2075 actively exploited?
How do I remediate CVE-2010-2075?
Dependency Blast Radius
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