Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
Affects Red HatSource GCVE Database
Not known to be exploited · CVSS 4.4 Medium · fixed in Red Hat Enterprise Linux 10 package updates : update Red Hat when convenient.
Data as of 5 Nov 2026, 23:24 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 4.4 |
|---|
- EPSS
- 0.08% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.35
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10tar | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8tar | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9tar | Affected– | Fixed in– |
| Red Hat Discovery 2discovery/discovery-server-rhel9 | Affected– | Fixed in– |
| Red Hat Hardened Imagestar-main | Affected– | Fixed in– |
| Red Hat Update Infrastructure 5rhui5/cds-kubernetes-rhel9 | Affected– | Fixed in– |
AI-suggested
Red Hat has released an official security update fixing this vulnerability in tar version 1.35-9.1.hum1. Users of Red Hat Hardened Images should apply this update promptly to mitigate the issue. No additional mitigation steps are indicated by the vendor advisory.
Description
A medium severity vulnerability (CVE-2026-18477) affecting the tar utility in Red Hat Hardened Images and SUSE Linux Enterprise has been addressed by Red Hat. The issue is classified under CWE-367 and fixed in tar version 1.35-9.1.hum1 for relevant architectures including aarch64 and x86_64. No known exploits are reported in the wild. The update is available as part of Red Hat Hardened Images RPMs security update RHSA-2026:49361.
References
- access.redhat.com/errata/RHSA-2026:49361 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-18477 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- images.redhat.com (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_49361.json (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2509735 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:61581 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:61586 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:61783 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-18477 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:66018 (opens in a new tab)
- suse.com/support/security/rating/ (opens in a new tab)
- ftp.suse.com/pub/projects/security/csaf/rhsa-2026_61586.json (opens in a new tab)
- lists.suse.com/pipermail/suse-liberty-linux-updates/2026-September/007705.html (opens in a new tab)
- suse.com/security/cve/CVE-2026-18477/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-18508/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-5704/ (opens in a new tab)