How severe is CVE-2017-13674?

CVE-2017-13674 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-13674 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-13674?

CVE-2017-13674 affects Symantec Proxyclient. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-13674?

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-2017-13674 published?

CVE-2017-13674 was published on 2017-09-01 and last updated on 2026-06-17.

CVE-2017-13674

CVE-2017-13674 is a high-severity vulnerability in Symantec Proxyclient with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Symantec Proxyclient
Published: 2017-09-01
Last modified: 2026-06-17

Description

Symantec ProxyClient 3.4 for Windows is susceptible to a privilege escalation vulnerability. A malicious local Windows user can, under certain circumstances, exploit this vulnerability to escalate their privileges on the system and execute arbitrary code with LocalSystem privileges.

Frequently asked questions

What is CVE-2017-13674?: Symantec ProxyClient 3.4 for Windows is susceptible to a privilege escalation vulnerability. A malicious local Windows user can, under certain circumstances, exploit this vulnerability to escalate their privileges on the system and execute arbitrary code with LocalSystem privileges.
How severe is CVE-2017-13674?: CVE-2017-13674 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-13674 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-13674?: CVE-2017-13674 affects Symantec Proxyclient. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-13674?: 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-2017-13674 published?: CVE-2017-13674 was published on 2017-09-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:symantec:proxyclient:3.4:*:*:*:*:windows:*:*