[UPDATE] [medium] CUPS: Multiple Vulnerabilities
An attacker can exploit multiple vulnerabilities in CUPS to bypass security measures, execute arbitrary code, gain elevated privileges, manipulate data, or cause a denial-of-service condition.
CSIRTS triage
- What
- Multiple vulnerabilities in CUPS can bypass security measures, execute arbitrary code, gain elevated privileges, manipulate data, or cause denial-of-service conditions.
- Who is affected
- Deployments of CUPS are affected.
- Urgency
- Remediation is medium urgency due to the potential for exploitation and medium severity.
- Action
- Apply patches as soon as they are available.
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-2026-0947
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-2026-274470.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all scored CVEs.
- Low exploitation riskCVE-2026-349780.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 33% of all scored CVEs.
- Low exploitation riskCVE-2026-349790.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 30% of all scored CVEs.
- Low exploitation riskCVE-2026-349800.50% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 39% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-27447 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-34978 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-34979 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-34980 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for CUPS
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.
- low[UPDATE] [low] CUPS: Multiple Vulnerabilities Allow Denial of Servicecert-bund · 2026-07-03
- unknownLink following vulnerability in Canon My Image Garden for macOS and CUPS Printer Driver for macOSjvn · 2026-05-29
- unknown[Update] Vulnerabilities affecting OpenPrinting CUPS (September 27, 2024)cert-fr-alerte · 2024-09-27
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