CVE-2012-6275Bigant Im Message Server Memory Corruption
Multiple stack-based buffer overflows in AntDS.exe in BigAntSoft BigAnt IM Message Server allow remote attackers to have an unspecified impact via (1) the filename header in an SCH request or (2) the userid component in a DUPF request.
Published Feb 24, 2013 · Updated Apr 28, 2026
Key Facts
Patch immediately- CVE-2012-6275 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Bigant Im Message Server (Bigantsoft).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 46% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
10.0
AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
46%
Higher than 98.8% of all scored CVEs
Exploit maturity
Weaponized
ATLAS score
56/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Weaponized
Public exploit code
2
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Description
Multiple stack-based buffer overflows in AntDS.exe in BigAntSoft BigAnt IM Message Server allow remote attackers to have an unspecified impact via (1) the filename header in an SCH request or (2) the userid component in a DUPF request.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Bigant Im Message ServerBigantsoft | See advisory | n/a |
Timeline
Publicly disclosed
Feb 24, 2013
Last updated
Apr 28, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- exploitMSF bigant_server_sch_dupf_bof.rb
- exploitExploitDB-24527
- otherVU#990652
FAQ
Common Questions.
Multiple stack-based buffer overflows in AntDS.exe in BigAntSoft BigAnt IM Message Server allow remote attackers to have an unspecified impact via (1) the filename header in an SCH request or (2) the userid component in a DUPF request.
Affected: Bigant Im Message Server (Bigantsoft). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2012-6275 On Your Attack Surface?
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