How severe is CVE-2017-16661?

CVE-2017-16661 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-16661 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-16661?

CVE-2017-16661 affects Cacti. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-16661?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-16661 published?

CVE-2017-16661 was published on 2017-11-08 and last updated on 2026-06-17.

CVE-2017-16661

CVE-2017-16661 is a medium-severity vulnerability in Cacti with a CVSS 3.x base score of 4.9. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
CVSS v2: 4.0
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Cacti
Published: 2017-11-08
Last modified: 2026-06-17

Description

Cacti 1.1.27 allows remote authenticated administrators to read arbitrary files by placing the Log Path into a private directory, and then making a clog.php?filename= request, as demonstrated by filename=passwd (with a Log Path under /etc) to read /etc/passwd.

Frequently asked questions

What is CVE-2017-16661?: Cacti 1.1.27 allows remote authenticated administrators to read arbitrary files by placing the Log Path into a private directory, and then making a clog.php?filename= request, as demonstrated by filename=passwd (with a Log Path under /etc) to read /etc/passwd.
How severe is CVE-2017-16661?: CVE-2017-16661 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2017-16661 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-16661?: CVE-2017-16661 affects Cacti. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-16661?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-16661 published?: CVE-2017-16661 was published on 2017-11-08 and last updated on 2026-06-17.

References

https://github.com/Cacti/cacti/issues/1066

Affected products (1)

cpe:2.3:a:cacti:cacti:1.1.27:*:*:*:*:*:*:*

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