CVE-2017-20218

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 3.1% of scored records. A rank, not a probability.

NVD base score

8.5 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-03-15 18:34Z7 MO AGO

Last updated

2026-03-16 14:20Z7 MO AGO

Reserved

2026-03-15

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 8.5)

CNA CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Weaknesses

• CWE-428Unquoted Search Path or ElementBase

Data version

5.2

Document digest

c527f5554c6823cad7c05d30e6a2843d321c00498522a8aa1556aafb0356daca

• www.zeroscience.mkZero Science Lab Disclosurehttps://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5405.phpthird-party-advisory
• blogs.securiteam.comSecuriTeam Blogshttps://blogs.securiteam.com/index.php/archives/3094third-party-advisory
• www.exploit-db.comExploit-DBhttps://www.exploit-db.com/exploits/41959/exploit
• packetstormsecurity.comPacket Storm Securityhttps://packetstormsecurity.com/files/142384exploit
• cxsecurity.comCXSecurityhttps://cxsecurity.com/issue/WLB-2017050019third-party-advisory
• exchange.xforce.ibmcloud.comIBM X-Force Exchangehttps://exchange.xforce.ibmcloud.com/vulnerabilities/125644vdb-entry
• www.vulncheck.comVulnCheck Advisory: Serviio PRO 1.8 Local Privilege Escalation via Unquoted Pathhttps://www.vulncheck.com/advisories/serviio-pro-local-privilege-escalation-via-unquoted-paththird-party-advisory