HOMEVULNERABILITIESCVE-2021-3291
HIGHPOC

CVE-2021-3291

CWE-78Published: January 26, 2021· Updated: Jun 17, 2026

7.2
CVSS v3.1

Official Description

Zen Cart 1.5.7b allows admins to execute arbitrary OS commands by inspecting an HTML radio input element (within the modules edit page) and inserting a command.

NVD Source

Technical Analysis

CVE-2021-3291 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.2.

A proof-of-concept (PoC) exploit exists for CVE-2021-3291. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

zen-cart1 product(s)
zen cart
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://packetstormsecurity.com/files/161613/Zen-Cart-1.5.7b-Remote-Code-Execution.html
ADVISORYhttps://github.com/MucahitSaratar/zencart_auth_rce_poc
ADVISORYhttp://packetstormsecurity.com/files/161613/Zen-Cart-1.5.7b-Remote-Code-Execution.html
ADVISORYhttps://github.com/MucahitSaratar/zencart_auth_rce_poc

All References (4)

→
http://packetstormsecurity.com/files/161613/Zen-Cart-1.5.7b-Remote-Code-Execution.htmlExploit · Third Party Advisory · VDB Entry
→
https://github.com/MucahitSaratar/zencart_auth_rce_pocExploit · Third Party Advisory
→
http://packetstormsecurity.com/files/161613/Zen-Cart-1.5.7b-Remote-Code-Execution.htmlExploit · Third Party Advisory · VDB Entry
→
https://github.com/MucahitSaratar/zencart_auth_rce_pocExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2021-3291
CVSS Score7.2 / 10
SeverityHIGH
WeaknessCWE-78
CISA KEVNo
ExploitPOC
Affected1 vendor(s)
PublishedJan 26, 2021

Related CVEs (CWE-78)

CVE-2014-0659
10.0
CVE-2014-9727
10.0
CVE-2023-37903
10.0
CVE-2017-14459
10.0
CVE-2014-1982
10.0
CVE-2013-2578
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-3291 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2021-3291·NVD