CVE-2007-5256
CVE-2007-5256 is a high-severity vulnerability in Mcdu Fsd with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: High (CVSS 2.0 base score 7.5)
- EPSS exploit prediction: 7% (93rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Mcdu Fsd
- Published:
- Last modified:
Description
Multiple stack-based buffer overflows in FSD 2.052 d9 and earlier, and FSFDT FSD 3.000 d9 and earlier, allow (1) remote attackers to execute arbitrary code via a long HELP command on TCP port 3010 to the sysuser::exechelp function in sysuser.cc and (2) remote authenticated users to execute arbitrary code via long commands on TCP port 6809 to the servinterface::sendmulticast function in servinterface.cc, as demonstrated by a PIcallsign command.
Frequently asked questions
- What is CVE-2007-5256?
- Multiple stack-based buffer overflows in FSD 2.052 d9 and earlier, and FSFDT FSD 3.000 d9 and earlier, allow (1) remote attackers to execute arbitrary code via a long HELP command on TCP port 3010 to the sysuser::exechelp function in sysuser.cc and (2) remote authenticated users to execute arbitrary code via long commands on TCP port 6809 to the servinterface::sendmulticast function in servinterface.cc, as demonstrated by a PIcallsign command.
- How severe is CVE-2007-5256?
- CVE-2007-5256 has a CVSS 2.0 base score of 7.5, rated high severity.
- Is CVE-2007-5256 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2007-5256?
- CVE-2007-5256 primarily affects Mcdu Fsd. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2007-5256?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2007-5256 published?
- CVE-2007-5256 was published on 2007-10-06 and last updated on 2026-06-16.
References
- http://aluigi.altervista.org/adv/fsdbof-adv.txt
- http://secunia.com/advisories/27008
- http://secunia.com/advisories/27045
- http://securityreason.com/securityalert/3195
- http://www.securityfocus.com/archive/1/481221/100/0/threaded
- http://www.securityfocus.com/archive/1/481495/100/0/threaded
- http://www.securityfocus.com/bid/25883
- http://www.vupen.com/english/advisories/2007/3334
- https://www.exploit-db.com/exploits/4484
Affected products (2)
- cpe:2.3:a:mcdu:fsd:2.052_d9:*:*:*:*:*:*:*
- cpe:2.3:a:mcdu:fsd:3.000_d9:*:*:*:*:*:*:*
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