Western Digital has identified a security vulnerability in the Replay Protected Memory Block (RPMB) protocol as specified in multiple standards for storage device interfaces, including all versions of eMMC, UFS, and NVMe. The RPMB protocol is specified by industry standards bodies and is implemented by storage devices from multiple vendors to assist host systems in securing trusted firmware. Several scenarios have been identified in which the RPMB state may be affected by an attacker without the knowledge of the trusted component that uses the RPMB feature.
CVE-2020-13799
This medium-severity CVE scores 6.8 under NVD CVSS v3. EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.8
- EG Score
- 6.8(low)
- EPSS
- 20.9%
- KEV
- Not listed
Published
November 18, 2020
Last Modified
June 5, 2026
References (6)
- cve@mitrehttps://www.kb.cert.org/vuls/id/231329
- cve@mitrehttps://www.kb.cert.org/vuls/id/231329
- cve@mitrehttps://www.westerndigital.com/support/productsecurity/wdc-20008-replay-attack-vulnerabilities-rpmb-protocol-applications
- af854a3a-2127-422b-91ae-364da2661108https://www.kb.cert.org/vuls/id/231329
- af854a3a-2127-422b-91ae-364da2661108https://www.kb.cert.org/vuls/id/231329
- af854a3a-2127-422b-91ae-364da2661108https://www.westerndigital.com/support/productsecurity/wdc-20008-replay-attack-vulnerabilities-rpmb-protocol-applications
Vendor Advisories for CVE-2020-13799(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 45× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:24 UTCEPSS rescore
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- 2026-06-22 14:23 UTCEPSS rescore
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- 2026-05-27 13:39 UTCEPSS rescore
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- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-23 05:04 UTCEG score recompute
- 2026-05-23 05:04 UTCGHSA enrichment
Frequently asked(5)
What is CVE-2020-13799?
When was CVE-2020-13799 disclosed?
Is CVE-2020-13799 actively exploited?
What is the CVSS score of CVE-2020-13799?
How do I remediate CVE-2020-13799?
Dependency Blast Radius
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