How severe is CVE-2017-15703?

CVE-2017-15703 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-15703 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-15703?

CVE-2017-15703 affects Apache Nifi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-15703?

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

When was CVE-2017-15703 published?

CVE-2017-15703 was published on 2018-01-25 and last updated on 2026-06-17.

CVE-2017-15703

CVE-2017-15703 is a medium-severity vulnerability in Apache Nifi with a CVSS 3.x base score of 5.0. 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-502.

Key facts

Severity: Medium (CVSS 3.x base score 5.0)
CVSS v2: 3.5
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Apache Nifi
Published: 2018-01-25
Last modified: 2026-06-17

Description

Any authenticated user (valid client certificate but without ACL permissions) could upload a template which contained malicious code and caused a denial of service via Java deserialization attack. The fix to properly handle Java deserialization was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.

Frequently asked questions

What is CVE-2017-15703?: Any authenticated user (valid client certificate but without ACL permissions) could upload a template which contained malicious code and caused a denial of service via Java deserialization attack. The fix to properly handle Java deserialization was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.
How severe is CVE-2017-15703?: CVE-2017-15703 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-15703 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-15703?: CVE-2017-15703 affects Apache Nifi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-15703?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-15703 published?: CVE-2017-15703 was published on 2018-01-25 and last updated on 2026-06-17.

References

https://nifi.apache.org/security.html#CVE-2017-15703

Affected products (1)

cpe:2.3:a:apache:nifi:*:*:*:*:*:*:*:*

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