CVE-2015-9254
CVE-2015-9254 is a critical-severity vulnerability in Datto Alto 3 Firmware with a CVSS 3.x base score of 9.8. 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-798.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 1% (62nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-798
- Affected product: Datto Alto 3 Firmware
- Published:
- Last modified:
Description
Datto ALTO and SIRIS devices have a default VNC password.
Frequently asked questions
- What is CVE-2015-9254?
- Datto ALTO and SIRIS devices have a default VNC password.
- How severe is CVE-2015-9254?
- CVE-2015-9254 has a CVSS 3.x base score of 9.8, 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 high.
- Is CVE-2015-9254 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2015-9254?
- CVE-2015-9254 primarily affects Datto Alto 3 Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2015-9254?
- 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-2015-9254 published?
- CVE-2015-9254 was published on 2018-02-20 and last updated on 2026-06-17.
References
Affected products (8)
- cpe:2.3:o:datto:alto_3_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:datto:alto_2_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:datto:alto_xl_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:datto:siris_3_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:datto:siris_2_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:datto:siris_3_x_all-flash_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:datto:siris_virtual_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:datto:alto_imaged_firmware:-:*:*:*:*:*:*:*
More vulnerabilities in Datto Alto 3 Firmware
- CVE-2015-2081 — Critical (CVSS 9.8): Datto ALTO and SIRIS devices allow Remote Code Execution via unauthenticated requests to PHP scripts.
- CVE-2015-9256 — Medium (CVSS 5.3): Datto ALTO and SIRIS devices allow remote attackers to obtain sensitive information via access to device/VM restore…
- CVE-2015-9255 — Medium (CVSS 5.3): Datto ALTO and SIRIS devices allow remote attackers to obtain sensitive information about data, software versions,…
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- CVE-2026-22769 — Critical (CVSS 10.0): Dell RecoverPoint for Virtual Machines, versions prior to 6.0.3.1 HF1, contain a hardcoded credential vulnerability.…
- CVE-2025-42890 — Critical (CVSS 10.0): SQL Anywhere Monitor (Non-GUI) baked credentials into the code,exposing the resources or functionality to unintended…
- CVE-2025-7503 — Critical (CVSS 10.0): An OEM IP camera manufactured by Shenzhen Liandian Communication Technology LTD exposes a Telnet service (port 23) with…
- CVE-2025-20309 — Critical (CVSS 10.0): A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session…
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