CVE-2017-15806
CVE-2017-15806 is a high-severity vulnerability in Zetacomponents Mail with a CVSS 3.x base score of 8.1. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.
Key facts
- Severity: High (CVSS 3.x base score 8.1)
- CVSS v2: 6.8
- EPSS exploit prediction: 11% (95th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-94
- Affected product: Zetacomponents Mail
- Published:
- Last modified:
Description
The send function in the ezcMailMtaTransport class in Zeta Components Mail before 1.8.2 does not properly restrict the set of characters used in the ezcMail returnPath property, which might allow remote attackers to execute arbitrary code via a crafted email address, as demonstrated by one containing "-X/path/to/wwwroot/file.php."
Frequently asked questions
- What is CVE-2017-15806?
- The send function in the ezcMailMtaTransport class in Zeta Components Mail before 1.8.2 does not properly restrict the set of characters used in the ezcMail returnPath property, which might allow remote attackers to execute arbitrary code via a crafted email address, as demonstrated by one containing "-X/path/to/wwwroot/file.php."
- How severe is CVE-2017-15806?
- CVE-2017-15806 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2017-15806 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-15806?
- CVE-2017-15806 affects Zetacomponents Mail. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2017-15806?
- 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-2017-15806 published?
- CVE-2017-15806 was published on 2017-11-15 and last updated on 2026-06-17.
References
- http://www.securityfocus.com/bid/101866
- https://github.com/zetacomponents/Mail/issues/58
- https://github.com/zetacomponents/Mail/releases/tag/1.8.2
- https://kay-malwarebenchmark.github.io/blog/cve-2017-15806-critical-rce-vulnerability/
- https://kay-malwarebenchmark.github.io/blog/cve-2017-15806-yuan-cheng-dai-ma-zhi-xing-lou-dong/
- https://www.exploit-db.com/exploits/43155/
Affected products (1)
- cpe:2.3:a:zetacomponents:mail:*:*:*:*:*:*:*:*
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