CVE-2021-27200

CRITICALNVD 9.89.8—

9.8

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.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 86.9%
KEV: Not listed

Published

June 11, 2021

Last Modified

November 21, 2024

References (6)

cve@mitrehttps://securityforeveryone.com/blog/wowonder-0-day-vulnerability-cve-2021-27200
cve@mitrehttps://www.exploit-db.com/exploits/49989
cve@mitrehttps://www.wowonder.com
af854a3a-2127-422b-91ae-364da2661108https://securityforeveryone.com/blog/wowonder-0-day-vulnerability-cve-2021-27200
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/49989
af854a3a-2127-422b-91ae-364da2661108https://www.wowonder.com

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 14:57 UTCEG score recompute
2026-05-26 14:57 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-27200?

CVE-2021-27200 is a critical vulnerability published on June 11, 2021. 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.

When was CVE-2021-27200 disclosed?

CVE-2021-27200 was first published in the National Vulnerability Database on June 11, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-27200 actively exploited?

CVE-2021-27200 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 86.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-27200?

CVE-2021-27200 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-27200?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-27200, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-27200

Explore →

Is Your Infrastructure Affected by CVE-2021-27200?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2021-27200

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-27200?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (6)

Frequently asked(5)

Related CVEs(same CWE)