How severe is CVE-2015-1503?

CVE-2015-1503 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2015-1503 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 59% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-1503?

CVE-2015-1503 affects Icewarp Mail Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-1503?

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-2015-1503 published?

CVE-2015-1503 was published on 2018-05-08 and last updated on 2026-06-17.

CVE-2015-1503

CVE-2015-1503 is a high-severity vulnerability in Icewarp Mail Server with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 59% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 59% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Icewarp Mail Server
Published: 2018-05-08
Last modified: 2026-06-17

Description

Multiple directory traversal vulnerabilities in IceWarp Mail Server before 11.2 allow remote attackers to read arbitrary files via a (1) .. (dot dot) in the file parameter to a webmail/client/skins/default/css/css.php page or .../. (dot dot dot slash dot) in the (2) script or (3) style parameter to webmail/old/calendar/minimizer/index.php.

Frequently asked questions

What is CVE-2015-1503?: Multiple directory traversal vulnerabilities in IceWarp Mail Server before 11.2 allow remote attackers to read arbitrary files via a (1) .. (dot dot) in the file parameter to a webmail/client/skins/default/css/css.php page or .../. (dot dot dot slash dot) in the (2) script or (3) style parameter to webmail/old/calendar/minimizer/index.php.
How severe is CVE-2015-1503?: CVE-2015-1503 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2015-1503 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 59% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-1503?: CVE-2015-1503 affects Icewarp Mail Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-1503?: 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-2015-1503 published?: CVE-2015-1503 was published on 2018-05-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:icewarp:mail_server:*:*:*:*:*:*:*:*

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