Red Hat Enterprise Linux 10: Out-of-bounds Read
CVE-2025-49796 is a critical-severity out-of-bounds read vulnerability in Red Hat Enterprise Linux 10 from Red Hat, with a CVSS 3.1 base score of 9.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 1.63% chance of exploitation within 30 days, higher than 77% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update RUGGEDCOM ROX MX5000 to V2.17.1 or a later version.
- Update RUGGEDCOM ROX MX5000RE to V2.17.1 or a later version.
- Update RUGGEDCOM ROX RX1400 to V2.17.1 or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
Version data comes from the organisation that assigned the CVE; 21 further products are omitted here. 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
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H. Scored by CNA (redhat.com).
Official description
A vulnerability was found in libxml2. Processing certain sch:name elements from the input XML file can trigger a memory corruption issue. This flaw allows an attacker to craft a malicious XML input file that can lead libxml to crash, resulting in a denial of service or other possible undefined behavior due to sensitive data being corrupted in memory.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
How developers prevent this class of flaw
- Use a language that provides appropriate memory abstractions.
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
Other references
- access.redhat.com/errata/RHSA-2025:10630
- access.redhat.com/errata/RHSA-2025:10698
- access.redhat.com/errata/RHSA-2025:10699
- access.redhat.com/errata/RHSA-2025:11580
- access.redhat.com/errata/RHSA-2025:12098
- access.redhat.com/errata/RHSA-2025:12099
- access.redhat.com/errata/RHSA-2025:12199
- access.redhat.com/errata/RHSA-2025:12237
- access.redhat.com/errata/RHSA-2025:12239
- access.redhat.com/errata/RHSA-2025:12240
- access.redhat.com/errata/RHSA-2025:12241
- access.redhat.com/errata/RHSA-2025:13267
- access.redhat.com/errata/RHSA-2025:13335
- access.redhat.com/errata/RHSA-2025:15397
- access.redhat.com/errata/RHSA-2025:15827
Other vulnerabilities in Red Hat Enterprise Linux 10
- 8.8 High severity
- 7.5 High severity
- 7.5 High severity
- 7.9 High severity
- 7.3 High severity
- 7.5 High severity
Recent Out-of-bounds Read vulnerabilities
- 8.4 High severity
- 7.1 High severity
- 8.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
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