CVE-2023-25000
Vault Vulnerable to Cache-Timing Attacks During Seal and Unseal Operations
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
5.0
Vault Vulnerable to Cache-Timing Attacks During Seal and Unseal Operations
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.
- Record
CVE-2023-25000- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N - Weakness
- CWE-208
- Updated
- 2026-11-02
EUVDEUVD-2023-1119
5.0
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.
- Record
EUVD-2023-1119- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vq4h-9ghm-qmrr
4.7
HashiCorp Vault's implementation of Shamir's secret sharing vulnerable to cache-timing attacks
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.
- Record
GHSA-vq4h-9ghm-qmrr- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-203, CWE-208
- Updated
- 2026-11-02
NVD
5.0
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.
- Record
CVE-2023-25000- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N - CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-208, CWE-203
- Updated
- 2026-11-02
OSV
5.0
Vault Vulnerable to Cache-Timing Attacks During Seal and Unseal Operations
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.
- Record
CVE-2023-25000- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N - Weakness
- CWE-208
- Updated
- 2026-11-02
OSVGHSA-vq4h-9ghm-qmrr
4.7
HashiCorp Vault's implementation of Shamir's secret sharing vulnerable to cache-timing attacks
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.
- Record
GHSA-vq4h-9ghm-qmrr- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-203, CWE-208
- Updated
- 2026-11-02
OSVBIT-vault-2023-25000 No score
Vault Vulnerable to Cache-Timing Attacks During Seal and Unseal Operations
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.
- Record
BIT-vault-2023-25000- Updated
- 2026-11-02
OSVGO-2023-1709 No score
Cache-timing attacks in Shamir's secret sharing in github.com/hashicorp/vault
HashiCorp Vault's implementation of Shamir's secret sharing uses precomputed table lookups, and is 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.
- Record
GO-2023-1709- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/hashicorp/vaultGo |
before 1.11.9 | 1.11.9 |
github.com/hashicorp/vaultGo |
1.12.0 up to 1.12.5 | 1.12.5 |
github.com/hashicorp/vaultGo |
1.13.0 up to 1.13.1 | 1.13.1 |
vaultBitnami |
before 1.11.9, 1.12.0 up to 1.12.5, 1.13.0 up to 1.13.1 | 1.11.91.12.51.13.1 |
github.com/hashicorp/vaultGo |
before 1.11.9, 1.12.0 up to 1.12.5, 1.13.0 up to 1.13.1 | 1.11.91.12.51.13.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-25000 is a medium vulnerability (CVSS 5.0) in Hashicorp Vault, published March 30, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 11th percentile. Fixed in github.com/hashicorp/vault 1.11.9.
References
discuss.hashicorp.com/t/hcsec-2023-10-vault-vulnerable-to-cache-timing-attacks-during-seal-and-unseal-operations/52078
security.netapp.com/advisory/ntap-20230526-0008
nvd.nist.gov/vuln/detail/CVE-2023-25000
github.com/hashicorp/vault/pull/19495
github.com/advisories/GHSA-vq4h-9ghm-qmrr
github.com/CVEProject/cvelistV5/tree/main/cves/2023/25xxx/CVE-2023-25000.json
github.com/hashicorp/vault