Multiple buffer overflows in the IMAP service in Mercury/32 4.01a allow remote authenticated users to cause a denial of service (application crash) and possibly execute arbitrary code via long arguments to the (1) EXAMINE, (2) SUBSCRIBE, (3) STATUS, (4) APPEND, (5) CHECK, (6) CLOSE, (7) EXPUNGE, (8) FETCH, (9) RENAME, (10) DELETE, (11) LIST, (12) SEARCH, (13) CREATE, or (14) UNSUBSCRIBE commands.
CVE-2004-1211
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 10.0 — 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:C/I:C/A:C. 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 72.5% 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 72%
- 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)
- 10.0HIGHNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 10.0(low)
- EG Risk
- 78(Track)EG Risk 78/100SSVC: 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 computedSeverity100% × 45%Exploitation72% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 72%
- EPSS %ILE
- 99%
- KEV
- Not listed
Published
January 10, 2005
Last Modified
June 16, 2026
References (14)
- cve@mitrehttp://home.kabelfoon.nl/~jaabogae/han/m_401b.html
- cve@mitrehttp://lists.grok.org.uk/pipermail/full-disclosure/2004-December/029701.html
- cve@mitrehttp://marc.info/?l=bugtraq&m=110193702909991&w=2
- cve@mitrehttp://secunia.com/advisories/13348
- cve@mitrehttp://www.osvdb.org/12508
- cve@mitrehttp://www.securityfocus.com/bid/11775
- cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/18318
- af854a3a-2127-422b-91ae-364da2661108http://home.kabelfoon.nl/~jaabogae/han/m_401b.html
- af854a3a-2127-422b-91ae-364da2661108http://lists.grok.org.uk/pipermail/full-disclosure/2004-December/029701.html
- af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=bugtraq&m=110193702909991&w=2
- af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/13348
- af854a3a-2127-422b-91ae-364da2661108http://www.osvdb.org/12508
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/11775
- af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/18318
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 0× in last 7d / 3× 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.
- 2026-09-12 14:54 UTCEPSS rescore
- 2026-09-10 09:23 UTCEPSS rescore
- 2026-08-30 01:13 UTCEPSS rescore
- 2026-07-26 13:24 UTCEG score recompute▲ 10.00
- 2026-07-25 14:11 UTCEPSS rescore
- 2026-07-24 14:11 UTCEPSS rescore
- 2026-07-23 00:46 UTCEG score recompute
- 2026-07-23 00:27 UTCEG score recompute▼ 6.90
- 2026-07-22 23:50 UTCEG score recompute▲ 6.90
- 2026-07-22 21:31 UTCEG score recompute
- 2026-07-20 17:02 UTCEPSS rescore
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- 2026-06-18 17:49 UTCEPSS rescore
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- 2026-06-04 13:09 UTCEPSS rescore
- 2026-06-02 20:10 UTCEPSS rescore
- 2026-05-31 14:31 UTCEG score recompute
- 2026-05-31 14:31 UTCGHSA enrichment
- 2026-05-31 00:13 UTCEPSS rescore
- 2026-05-31 00:13 UTCEPSS rescore
- 2026-05-29 13:40 UTCEPSS rescore
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- 2026-05-18 21:29 UTCEPSS rescore
- 2026-05-18 21:29 UTCEPSS rescore
Publicly available exploits
(8 references)Working exploit code is in the public domain (1 Metasploit module) (7 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Exploit-DBEDB-16484✓ verifiedFirst seen May 9, 2010
Mercury/32 Mail Server 4.01a - IMAP RENAME Buffer Overflow (Metasploit)
Open source ↗ - Exploit-DBEDB-4316✓ verifiedFirst seen Aug 26, 2007
Mercury/32 Mail Server 3.32 < 4.51 - SMTP EIP Overwrite
Open source ↗ - Exploit-DBEDB-3561✓ verifiedFirst seen Mar 24, 2007
Mercury/32 Mail Server 4.0.1 - 'LOGIN' Remote IMAP Stack Buffer Overflow
Open source ↗ - Exploit-DBEDB-670✓ verifiedFirst seen Dec 1, 2004
Mercury/32 Mail Server 4.01 - 'Pegasus' IMAP Buffer Overflow (2)
Open source ↗ - Exploit-DBEDB-1159✓ verifiedFirst seen Dec 1, 2004
Mercury/32 Mail Server 4.01a - 'check' Buffer Overflow
Open source ↗ - Exploit-DBEDB-668✓ verifiedFirst seen Nov 30, 2004
Mercury/32 Mail Server 4.01 - 'Pegasus' IMAP Buffer Overflow (1)
Open source ↗ - Exploit-DBEDB-663✓ verifiedFirst seen Nov 29, 2004
Mercury/32 Mail Server 4.01 - 'Pegasus' IMAP Buffer Overflow (3)
Open source ↗ - Metasploitexploit/windows/imap/mercury_rename✓ verifiedFirst seen Nov 29, 2004
Mercury/32 v4.01a IMAP RENAME Buffer Overflow
Open source ↗
Frequently asked(4)
What is CVE-2004-1211?
When was CVE-2004-1211 disclosed?
Is CVE-2004-1211 actively exploited?
How do I remediate CVE-2004-1211?
Dependency Blast Radius
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