How severe is CVE-2017-8051?

CVE-2017-8051 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-2017-8051 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8051?

CVE-2017-8051 primarily affects Tenable Appliance. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-8051?

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-2017-8051 published?

CVE-2017-8051 was published on 2017-04-21 and last updated on 2026-06-17.

CVE-2017-8051

CVE-2017-8051 is a critical-severity vulnerability in Tenable Appliance with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 16% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 16% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Tenable Appliance
Published: 2017-04-21
Last modified: 2026-06-17

Description

Tenable Appliance 3.5 - 4.4.0, and possibly prior versions, contains a flaw in the simpleupload.py script in the Web UI. Through the manipulation of the tns_appliance_session_user parameter, a remote attacker can inject arbitrary commands.

Frequently asked questions

What is CVE-2017-8051?: Tenable Appliance 3.5 - 4.4.0, and possibly prior versions, contains a flaw in the simpleupload.py script in the Web UI. Through the manipulation of the tns_appliance_session_user parameter, a remote attacker can inject arbitrary commands.
How severe is CVE-2017-8051?: CVE-2017-8051 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-2017-8051 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8051?: CVE-2017-8051 primarily affects Tenable Appliance. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-8051?: 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-2017-8051 published?: CVE-2017-8051 was published on 2017-04-21 and last updated on 2026-06-17.

References

Affected products (11)

cpe:2.3:a:tenable:appliance:3.4.0:*:*:*:*:*:*:*
cpe:2.3:a:tenable:appliance:3.5.0:*:*:*:*:*:*:*
cpe:2.3:a:tenable:appliance:3.5.1:*:*:*:*:*:*:*
cpe:2.3:a:tenable:appliance:3.10.0:*:*:*:*:*:*:*
cpe:2.3:a:tenable:appliance:3.10.1:*:*:*:*:*:*:*
cpe:2.3:a:tenable:appliance:4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:tenable:appliance:4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:tenable:appliance:4.2.0:*:*:*:*:*:*:*
cpe:2.3:a:tenable:appliance:4.3.0:*:*:*:*:*:*:*
cpe:2.3:a:tenable:appliance:4.3.1:*:*:*:*:*:*:*
cpe:2.3:a:tenable:appliance:4.4.0:*:*:*:*:*:*:*

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