How severe is CVE-2016-1505?

CVE-2016-1505 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2016-1505 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1505?

CVE-2016-1505 affects Radicale. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-1505?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2016-1505 published?

CVE-2016-1505 was published on 2016-02-03 and last updated on 2026-06-17.

CVE-2016-1505

CVE-2016-1505 is a critical-severity vulnerability in Radicale with a CVSS 3.x base score of 10.0. 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-21.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
CVSS v2: 7.5
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-21
Affected product: Radicale
Published: 2016-02-03
Last modified: 2026-06-17

Description

The filesystem storage backend in Radicale before 1.1 on Windows allows remote attackers to read or write to arbitrary files via a crafted path, as demonstrated by /c:/file/ignore.

Frequently asked questions

What is CVE-2016-1505?: The filesystem storage backend in Radicale before 1.1 on Windows allows remote attackers to read or write to arbitrary files via a crafted path, as demonstrated by /c:/file/ignore.
How severe is CVE-2016-1505?: CVE-2016-1505 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2016-1505 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1505?: CVE-2016-1505 affects Radicale. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-1505?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2016-1505 published?: CVE-2016-1505 was published on 2016-02-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:radicale:radicale:*:*:*:*:*:*:*:*

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