[UPDATE] [medium] Red Hat Enterprise Linux (ruby: net-imap): Multiple vulnerabilities
A remote, anonymous attacker can exploit multiple vulnerabilities in Red Hat Enterprise Linux to conduct a denial of service attack, bypass security measures, manipulate data, or disclose confidential information.
CSIRTS triage
- What
- Multiple vulnerabilities allow denial of service, bypass security measures, manipulate data, or disclose information.
- Who is affected
- Deployments of Red Hat Enterprise Linux with ruby: net-imap.
- Urgency
- Remediation is medium urgency due to the potential impacts of the vulnerabilities.
- Action
- Update to the latest version of the affected packages.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2163
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-422450.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-422460.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-422580.78% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 54% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-42245 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-42246 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-42258 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[NEW] [high] Ruby: Multiple vulnerabilitiescert-bund
- high[UPDATE] [high] HCL BigFix Compliance (Ruby): Multiple vulnerabilitiescert-bund
- unknownMultiple vulnerabilities in IBM products (July 31, 2026)cert-fr-avis
- unknownUSN-8556-1: Ruby vulnerabilitiesubuntu
- mediumGHSA-75xq-5h9v-w6px: net-imap vulnerable to command Injection via unvalidated Symbol inputsghsa
Recent advisories for Red Hat Enterprise
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- high[UPDATE] [hoch] Red Hat Enterprise Linux (postgis, virtuoso-opensource): Mehrere Schwachstellencert-bund · 2026-09-11
- medium[UPDATE] [mittel] Red Hat Enterprise Linux: Mehrere Schwachstellencert-bund · 2026-09-11
- high[UPDATE] [hoch] Red Hat Enterprise Linux (lxml): Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungencert-bund · 2026-09-11
- high[UPDATE] [hoch] Red Hat Enterprise Linux (openCryptoki, hplip, 389-ds-base): Mehrere Schwachstellencert-bund · 2026-09-11
- medium[UPDATE] [mittel] Red Hat Enterprise Linux (go-jose): Schwachstelle ermöglicht Denial of Servicecert-bund · 2026-09-11
- high[UPDATE] [hoch] Red Hat Enterprise Linux und Satellite (satellite/iop-remediations-rhel9 container image): Meh…cert-bund · 2026-09-11
More from CERT-Bund (BSI) Security Advisories
- high[UPDATE] [hoch] Red Hat Enterprise Linux (postgis, virtuoso-opensource): Mehrere Schwachstellen2026-09-11
- medium[UPDATE] [mittel] Red Hat Enterprise Linux: Mehrere Schwachstellen2026-09-11
- medium[UPDATE] [mittel] Linux Kernel: Schwachstelle ermöglicht Denial of Service2026-09-11
- medium[UPDATE] [mittel] Linux Kernel: Mehrere Schwachstellen2026-09-11
- high[UPDATE] [hoch] OpenSSL: Mehrere Schwachstellen2026-09-11