Red Hat Security Advisory: grub2 security update
Affects Red Hat grub2Source GCVE Database
Not known to be exploited : upgrade the Red Hat redhat/grub2 package to 9.8 when convenient.
Data as of 26 Oct 2026, 12:54 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 9.8
Exploitation evidence
Disclosed: evidence found.
CVE published 11 Nov 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade the Red Hat redhat/grub2 package to 9.8.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Red Hatredhat/grub2pkg:rpm/redhat/grub2Other threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. Security Fix(es): * grub2: grub-core/gettext: Integer overflow leads to Heap OOB Write. (CVE-2024-45777) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes linked from the References section.
References
- access.redhat.com/errata/RHSA-2025:20532 (opens in a new tab)
- docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/9.7_release_notes/index (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2346343 (opens in a new tab)
- issues.redhat.com/browse/RHEL-108060 (opens in a new tab)
- issues.redhat.com/browse/RHEL-44336 (opens in a new tab)
- issues.redhat.com/browse/RHEL-87421 (opens in a new tab)
- issues.redhat.com/browse/RHEL-91278 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_20532.json (opens in a new tab)