HashiCorp Vault/Vault Enterprise up to 1.18.1 synchronous access of remote resource without timeout
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 3.0 | $0-$5k | 0.00 |
Summary
A vulnerability marked as problematic has been reported in HashiCorp Vault and Vault Enterprise. The affected element is an unknown function. This manipulation causes synchronous access of remote resource without timeout. This vulnerability is handled as CVE-2025-4656. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.
Details
A vulnerability was found in HashiCorp Vault and Vault Enterprise. It has been declared as problematic. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a synchronous access of remote resource without timeout vulnerability. The CWE definition for the vulnerability is CWE-1088. The code has a synchronous call to a remote resource, but there is no timeout for the call, or the timeout is set to infinite. As an impact it is known to affect availability. The summary by CVE is:
Vault Community and Vault Enterprise rekey and recovery key operations can lead to a denial of service due to uncontrolled cancellation by a Vault operator. This vulnerability (CVE-2025-4656) has been remediated in Vault Community Edition 1.20.0 and Vault Enterprise 1.20.0, 1.19.6, 1.18.11, 1.17.17, and 1.16.22.
It is possible to read the advisory at discuss.hashicorp.com. This vulnerability is known as CVE-2025-4656 since 05/13/2025. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.
Upgrading to version 1.20.0 eliminates this vulnerability.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Product
Vendor
Name
Version
- 1.2.5
- 1.3.4
- 1.3.6
- 1.3.7
- 1.3.8
- 1.4.0
- 1.4.1
- 1.4.2
- 1.4.3
- 1.4.4
- 1.5.0
- 1.5.1
- 1.5.6
- 1.5.7
- 1.5.8
- 1.5.9
- 1.6.0
- 1.6.1
- 1.6.2
- 1.6.3
- 1.6.4
- 1.6.5
- 1.6.6
- 1.7.0
- 1.7.1
- 1.7.2
- 1.7.3
- 1.7.4
- 1.7.5
- 1.7.6
- 1.7.7
- 1.8.0
- 1.8.3
- 1.8.4
- 1.8.5
- 1.8.6
- 1.9.0
- 1.9.1
- 1.9.10
- 1.10.0
- 1.10.1
- 1.10.2
- 1.10.3
- 1.10.6
- 1.10.7
- 1.10.11
- 1.11.3
- 1.11.4
- 1.11.7
- 1.11.8
- 1.11.9
- 1.12.0
- 1.12.3
- 1.12.4
- 1.12.5
- 1.12.11
- 1.13.0
- 1.13.1
- 1.13.5
- 1.13.7
- 1.13.8
- 1.13.9
- 1.13.10
- 1.14.0
- 1.14.1
- 1.14.3
- 1.14.4
- 1.14.5
- 1.14.6
- 1.14.10
- 1.15
- 1.15.0
- 1.15.1
- 1.15.2
- 1.15.4
- 1.15.15
- 1.16.0
- 1.16.9
- 1.16.10
- 1.17.5
- 1.17.6
- 1.18.0
- 1.18.1
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 3.1VulDB Meta Temp Score: 3.0
VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍
CNA Base Score: 3.1
CNA Vector (HashiCorp): 🔒
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Synchronous access of remote resource without timeoutCWE: CWE-1088
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Status: Not defined
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔒
Upgrade: Vault/Vault Enterprise 1.20.0
Timeline
05/13/2025 CVE reserved06/25/2025 Advisory disclosed
06/25/2025 VulDB entry created
08/14/2025 VulDB entry last update
Sources
Advisory: discuss.hashicorp.comStatus: Confirmed
CVE: CVE-2025-4656 (🔒)
GCVE (CVE): GCVE-0-2025-4656
GCVE (VulDB): GCVE-100-313891
Entry
Created: 06/25/2025 18:56Updated: 08/14/2025 06:17
Changes: 06/25/2025 18:56 (62), 08/14/2025 06:17 (1)
Complete: 🔍
Cache ID: 216::103
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
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