HOMEVULNERABILITIESCVE-2021-27200
CRITICAL

CVE-2021-27200

CWE-330Published: June 11, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

In WoWonder 3.0.4, remote attackers can take over any account due to the weak cryptographic algorithm in recover.php. The code parameter is easily predicted from the time of day.

NVD Source

Technical Analysis

CVE-2021-27200 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

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 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

wowonder1 product(s)
wowonder
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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

ADVISORYhttps://securityforeveryone.com/blog/wowonder-0-day-vulnerability-cve-2021-27200
ADVISORYhttps://www.exploit-db.com/exploits/49989
ADVISORYhttps://securityforeveryone.com/blog/wowonder-0-day-vulnerability-cve-2021-27200
ADVISORYhttps://www.exploit-db.com/exploits/49989

All References (6)

→
https://securityforeveryone.com/blog/wowonder-0-day-vulnerability-cve-2021-27200Exploit · Third Party Advisory
→
https://www.exploit-db.com/exploits/49989Exploit · Third Party Advisory · VDB Entry
→
https://www.wowonder.comProduct
→
https://securityforeveryone.com/blog/wowonder-0-day-vulnerability-cve-2021-27200Exploit · Third Party Advisory
→
https://www.exploit-db.com/exploits/49989Exploit · Third Party Advisory · VDB Entry
→
https://www.wowonder.comProduct

Quick Facts

CVE IDCVE-2021-27200
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-330
CISA KEVNo
Affected1 vendor(s)
PublishedJun 11, 2021

Related CVEs (CWE-330)

CVE-2019-15130
9.8
CVE-2018-18602
9.8
CVE-2018-17888
9.8
CVE-2018-18375
9.8
CVE-2018-18531
9.8
CVE-2019-2294
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-27200 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-2021-27200·NVD