Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Affects Red HatSource GCVE Database
Not known to be exploited · CVSS 1.7 Low : upgrade Red Hat xz to 5.8.3 when convenient.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 43% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.8.3
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:UExploitation evidence
Disclosed: evidence found.
CVE published 2 Apr 2026
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 xz and tukaani-project/xz to 5.8.3.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| tukaani-projectxz | Affected
| Fixed in
|
GitHubtukaani-project/xzpkg:github/tukaani-project/xzOther 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
This update includes the following RPMs: xz: * xz-5.8.3-1.1.hum1 (aarch64, x86_64) * xz-devel-5.8.3-1.1.hum1 (aarch64, x86_64) * xz-libs-5.8.3-1.1.hum1 (aarch64, x86_64) * xz-lzma-compat-5.8.3-1.1.hum1 (aarch64, x86_64) * xz-static-5.8.3-1.1.hum1 (aarch64, x86_64) * xz-5.8.3-1.1.hum1.src (src)
References
- access.redhat.com/errata/RHSA-2026:7647 (opens in a new tab)
- images.redhat.com (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-34743 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7647.json (opens in a new tab)