CVE-2020-13167: Netsweeper through 6.4.3 allows unauthenticated remote code execution because webadmin/tools/unixlogin.php (wi

Q: How do I fix CVE-2020-13167?

netsweeper: upgrade to newer than 6.4.3. Exact commands for each OS are on this page.

Q: Is CVE-2020-13167 being exploited?

CVE-2020-13167 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-13167 affect?

CVE-2020-13167 affects netsweeper. Severity is critical (CVSS 9.8). Netsweeper through 6.4.3 allows unauthenticated remote code execution because webadmin/tools/unixlogin.php (with certain Referer headers) launches a command line with client-supplied parameters, and allows injection of shell metacharacters.

Q: How urgent is CVE-2020-13167?

Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2020-13167 is a critical-severity flaw (CVSS 9.8) affecting netsweeper. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Netsweeper through 6.4.3 allows unauthenticated remote code execution because webadmin/tools/unixlogin.php (with certain Referer headers) launches a command line with client-supplied parameters, and allows injection of shell metacharacters.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	95.0% (top 1%)
CISA exploited list	No
Weakness	CWE-78
Published	2020-05-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: netsweeper

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-05-19 20:15 UTCPublished CVE record published
2026-06-17 02:52 UTCUpdated Record last modified

netsweeper netsweeper UPGRADE

Affected: <= 6.4.3

Fixed in: newer than 6.4.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy netsweeper || rpm -q netsweeper || netsweeper --version

2. UPGRADE to newer than 6.4.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade netsweeper

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade netsweeper

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Metasploit: Netsweeper WebAdmin unixlogin.php Python Code Injection
Nuclei scan template: Netsweeper <=6.4.3 - Python Code Injection

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-13167?

netsweeper: upgrade to newer than 6.4.3. Exact commands for each OS are on this page.

Is CVE-2020-13167 being exploited?

CVE-2020-13167 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-13167 affect?

CVE-2020-13167 affects netsweeper. Severity is critical (CVSS 9.8). Netsweeper through 6.4.3 allows unauthenticated remote code execution because webadmin/tools/unixlogin.php (with certain Referer headers) launches a command line with client-supplied parameters, and allows injection of shell metacharacters.

How urgent is CVE-2020-13167?

Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

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CVE-2014-9615 MEDIUM 6.1 DOWNGRADE Cross-site scripting (XSS) vulnerability in Netsweeper 4.0.4 allows remote attackers to inject arbitrary web s
CVE-2014-9614 CRITICAL 9.8 UPGRADE The Web Panel in Netsweeper before 4.0.5 has a default password of branding for the branding account, which ma
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CVE-2014-9612 CRITICAL 9.8 UPGRADE SQL injection vulnerability in remotereporter/load_logfiles.php in Netsweeper before 3.1.10, 4.0.x before 4.0.

References

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