HashiCorp Vault's implementation of Shamir's secret sharing used precomputed table lookups, and was vulnerable to cache-timing attacks. An attacker with access to, and the ability to observe a large number of unseal operations on the host through a side channel may reduce the search space of a brute force effort to recover the Shamir shares. Fixed in Vault 1.13.1, 1.12.5, and 1.11.9.
CVE-2023-25000
This medium-severity CVE scores 5.0 under NVD CVSS v3. EPSS exploit probability: 0.2% (10th percentile of EPSS-scored CVEs). 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
A fix is available — apply it.
- CVSS v3
- 5.0
- EG Score
- 5.0MEDIUMmedium confidence
- EG Risk
- 23EG Risk 23/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity50% × 45%Exploitation0% × 40%Automatability0% × 15%CISA SSVC: Track at every mission impact level.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.2%
- EPSS %ILE
- 10th
- KEV
- Not listed
CISA SSVCTrack at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
March 30, 2023
Last Modified
November 21, 2024
References (4)
- security@hashicorphttps://discuss.hashicorp.com/t/hcsec-2023-10-vault-vulnerable-to-cache-timing-attacks-during-seal-and-unseal-operations/52078
- security@hashicorphttps://security.netapp.com/advisory/ntap-20230526-0008/
- af854a3a-2127-422b-91ae-364da2661108https://discuss.hashicorp.com/t/hcsec-2023-10-vault-vulnerable-to-cache-timing-attacks-during-seal-and-unseal-operations/52078
- af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20230526-0008/
Vendor Advisories for CVE-2023-25000(3)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2023:5006Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.14.0 bug fix and security update
- RHSA-2023:3742Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.13.0 security and bug fix update
- RHSA-2023:1326Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.13.0 security update
Patch Availability(3)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | openshift4/ose-installer:v4.14.0-202310201027.p0.g03546e5.assembly.stream | 2023-10-31 | redhat |
| redhat | odf4/rook-ceph-rhel9-operator:v4.13.0-70 | 2023-06-21 | redhat |
| redhat | openshift4/ose-installer:v4.13.0-202305091542.p0.g44db7b2.assembly.stream | 2023-05-17 | 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.
Affected Packages
(1 across 1 ecosystem)
Go(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| github.com/hashicorp/vault | — |
| — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 28× 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.
Showing the most recent 100 of 190 total refreshes for this CVE.
- 2026-10-09 20:05 UTCEPSS rescore
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Related CVEs(same product + same vendor + same CWE)
Same product
10 shownGo:github.com/hashicorp/vault
Same vendor
10 shownredhat:RHSA-2023:1326
Frequently asked(5)
What is CVE-2023-25000?
When was CVE-2023-25000 disclosed?
Is CVE-2023-25000 actively exploited?
What is the CVSS score of CVE-2023-25000?
How do I remediate CVE-2023-25000?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-25000
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