CVE-2017-20156Network attack vector

Command execution via unescaped print URL

Published Dec 31, 2022 · Updated Aug 5, 2024

Command injection in Exciting Printer allows attackers to execute arbitrary shell commands by submitting a crafted URL for printing. Printer::Jobs::PreparePage.save_url_to_path interpolates the unescaped URL into a PhantomJS command string and passes it to run. The upstream issue identifies no authentication gate; published assessments disagree between unauthenticated network access and privileged adjacent access.

CVSS severity9.8
Critical
EPSS probability2.06%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Exciting Printer allows attackers to execute arbitrary shell commands by submitting a crafted URL for printing. Printer::Jobs::PreparePage.save_url_to_path interpolates the unescaped URL into a PhantomJS command string and passes it to run. The upstream issue identifies no authentication gate; published assessments disagree between unauthenticated network access and privileged adjacent access.

The record

CVE
CVE-2017-20156
Published
Dec 31, 2022
Updated
Aug 5, 2024
Vendor
Exciting
Product
Printer
Classifications
CWE-77, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 31, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Exciting · Printerversion=n/a

Published CVSS scores

5.2VulDBAV:A/AC:L/Au:S/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5VulDBCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.004Unix Shell

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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