A deserialization of untrusted data vulnernerability exists in rails < 5.2.4.3, rails < 6.0.3.1 that can allow an attacker to unmarshal user-provided objects in MemCacheStore and RedisCacheStore potentially resulting in an RCE.
Loading...
Loading...
Score elevated to 9.8 because EPSS predicts 90% probability of exploitation within the next 30 days (top 0.4% of all CVEs). NVD baseline CVSS 9.8 retained for reference. Confidence: see factors.
A deserialization of untrusted data vulnernerability exists in rails < 5.2.4.3, rails < 6.0.3.1 that can allow an attacker to unmarshal user-provided objects in MemCacheStore and RedisCacheStore potentially resulting in an RCE.
June 19, 2020
May 9, 2025
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | tfm-rubygem-zeitwerk-0:2.2.2-1.el7sat | 2021-04-21 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| activesupport | 6.0.0 ... 6.0.3.rc1 (10 versions) | 6.0.3.1 | — |
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-8165
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.
redhat
CWE-502