Which products and versions are affected by CVE-2012-6530?

Affected: Multi Server (Sysax) versions 4.3, 4.5. The full list is in the CVE brief.

Is CVE-2012-6530 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2012-6530 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2012-6530?

Public exploit code is available.

Is there a fix for CVE-2012-6530?

Fixed versions are available, including Multi Server 5.50.

How urgently should CVE-2012-6530 be patched?

Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

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Emerging threatsHigh

CVE-2012-6530Multi Server Memory Corruption

Stack-based buffer overflow in Sysax Multi Server before 5.52, when HTTP is enabled, allows remote authenticated users with the create folder permission to execute arbitrary code via a crafted request.

Published Jan 31, 2013 · Updated Apr 28, 2026

Key Facts

Patch immediately

CVE-2012-6530 is a high-severity vulnerability (CVSS 7.1 v2) affecting Multi Server (Sysax).
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.
Fixed versions are available, including Multi Server 5.50.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

Scores

CVSS v2

7.1

AV:N/AC:H/Au:S/C:C/I:C/A:C

EPSS (30-day exploit likelihood)

46%

Higher than 98.7% of all scored CVEs

Exploit maturity

Weaponized

ATLAS score

54/100

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

Proof-of-concept links

In-the-wild evidence

Reports of active use

Description

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
Multi ServerSysax	4.3, 4.5	5.50

Patched Releases

Multi Server

5.50

Timeline

Publicly disclosed
Jan 31, 2013
Last updated
Apr 28, 2026

Weakness Type

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

2 more references in the full CVE brief

FAQ

Common Questions.

Stack-based buffer overflow in Sysax Multi Server before 5.52, when HTTP is enabled, allows remote authenticated users with the create folder permission to execute arbitrary code via a crafted request.
Affected: Multi Server (Sysax) versions 4.3, 4.5. 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.
Fixed versions are available, including Multi Server 5.50.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

Is CVE-2012-6530 On Your Attack Surface?

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.