CVE-2019-11829
CVE-2019-11829 is a high-severity vulnerability in Synology Calendar with a CVSS 3.x base score of 7.3. 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-78.
Key facts
- Severity: High (CVSS 3.x base score 7.3)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (81st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-78
- Affected product: Synology Calendar
- Published:
- Last modified:
Description
OS command injection vulnerability in drivers_syno_import_user.php in Synology Calendar before 2.3.1-0617 allows remote attackers to execute arbitrary commands via the crafted 'X-Real-IP' header.
Frequently asked questions
- What is CVE-2019-11829?
- OS command injection vulnerability in drivers_syno_import_user.php in Synology Calendar before 2.3.1-0617 allows remote attackers to execute arbitrary commands via the crafted 'X-Real-IP' header.
- How severe is CVE-2019-11829?
- CVE-2019-11829 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2019-11829 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-11829?
- CVE-2019-11829 affects Synology Calendar. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-11829?
- 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-2019-11829 published?
- CVE-2019-11829 was published on 2019-06-30 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:synology:calendar:*:*:*:*:*:*:*:*
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- CVE-2022-22686 — Medium (CVSS 6.5): Cross-Site Request Forgery (CSRF) vulnerability in webapi component in Synology Calendar before 2.3.4-0631 allows…
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- CVE-2019-11825 — Medium (CVSS 6.5): Cross-site scripting (XSS) vulnerability in Event Editor in Synology Calendar before 2.3.0-0615 allows remote attackers…
- CVE-2018-8915 — Medium (CVSS 6.5): Cross-site scripting (XSS) vulnerability in Notification Center in Synology Calendar before 2.1.1-0502 allows remote…
- CVE-2017-15891 — Medium (CVSS 6.5): Improper access control vulnerability in SYNO.Cal.EventBase in Synology Calendar before 2.0.1-0242 allows remote…
- CVE-2021-34812 — Medium (CVSS 5.8): Use of hard-coded credentials vulnerability in php component in Synology Calendar before 2.4.0-0761 allows remote…
All CVEs affecting Synology Calendar →
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