CVE-2007-4440
CVE-2007-4440 is a high-severity vulnerability in Pmail Mercury Mail Transport System with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 65% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.
Key facts
- Severity: High (CVSS 2.0 base score 7.5)
- EPSS exploit prediction: 65% (99th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Pmail Mercury Mail Transport System
- Published:
- Last modified:
Description
Stack-based buffer overflow in the MercuryS SMTP server in Mercury Mail Transport System, possibly 4.51 and earlier, allows remote attackers to execute arbitrary code via a long AUTH CRAM-MD5 string. NOTE: this might overlap CVE-2006-5961.
Frequently asked questions
- What is CVE-2007-4440?
- Stack-based buffer overflow in the MercuryS SMTP server in Mercury Mail Transport System, possibly 4.51 and earlier, allows remote attackers to execute arbitrary code via a long AUTH CRAM-MD5 string. NOTE: this might overlap CVE-2006-5961.
- How severe is CVE-2007-4440?
- CVE-2007-4440 has a CVSS 2.0 base score of 7.5, rated high severity.
- Is CVE-2007-4440 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 65% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2007-4440?
- CVE-2007-4440 affects Pmail Mercury Mail Transport System. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2007-4440?
- 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-2007-4440 published?
- CVE-2007-4440 was published on 2007-08-21 and last updated on 2026-06-16.
References
- http://archives.neohapsis.com/archives/fulldisclosure/2007-08/0341.html
- http://secunia.com/advisories/26519
- http://www.pmail.com/m32_451.htm
- http://www.securityfocus.com/bid/25357
- http://www.securitytracker.com/id?1018587
- http://www.vupen.com/english/advisories/2007/2918
- https://exchange.xforce.ibmcloud.com/vulnerabilities/36117
- https://exchange.xforce.ibmcloud.com/vulnerabilities/36299
- https://www.exploit-db.com/exploits/4294
Affected products (1)
- cpe:2.3:a:pmail:mercury_mail_transport_system:*:*:*:*:*:*:*:*
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