Ubuntu: Exposure of Sensitive System Information Due to Uncleared Debug Information
CVE-2025-14551 is a high-severity exposure of sensitive system information due to uncleared debug information vulnerability in Ubuntu from Canonical, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected Ubuntu versions: 24.04.4 and earlier; 25.10 and earlier; 25.04 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.29% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Ubuntu you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Canonical | Ubuntu | 24.04.4 and earlier; 25.10 and earlier; 25.04 and earlier | Not stated |
| Canonical | Ubuntu Subiquity | 24.04.4 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 2.7 | Low | CNA (ubuntu.com) |
| CVSS 3.1 | 8.1 | High | NVD |
Official description
In Ubuntu, Subiquity version 24.04.4 could leak sensitive user credentials during crash reporting. Upon installation failure, if a user submitted a bug report to Launchpad, Subiquity could include certain user credentials, such as the user's plaintext Wi-Fi password, in the attached logs.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Exposure of Sensitive System Information Due to Uncleared Debug Information
The hardware product enters debug mode but does not fully clear security-sensitive values, such as keys and intermediate values in cryptographic operations.
How developers prevent this class of flaw
- Whenever debug mode is enabled, all registers containing sensitive assets must be cleared.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- github.com/canonical/subiquity/pull/2357Issue Tracking
- github.com/canonical/subiquity/pull/2358Issue Tracking
Other vulnerabilities in Ubuntu
- 8.8 High severity
- 9.1 Critical severity
Recent Exposure of Sensitive System Information Due to Uncleared Debug Information vulnerabilities
- 9.3 Critical severity
- 9.6 Critical severity
- 7.5 High severity
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