CVE-2026-53075: ppp: require CAP_NET_ADMIN in target netns for unattached ioctls
CSIRTS triage
- What
- The vulnerability requires CAP_NET_ADMIN in the target netns for unattached ioctls.
- Who is affected
- Deployments using PPP may be affected.
- Urgency
- Remediation is critical due to the severity rating of 9.8.
- Action
- Apply the necessary patches as they become available.
AI-assisted analysis generated from the source advisory — verify against the original.
Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53075
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-2026-530750.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-53075 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownUSN-8620-4: Linux kernel (Intel IoTG) vulnerabilitiesubuntu
- unknownUSN-8620-3: Linux kernel (Intel IoTG) vulnerabilitiesubuntu
- unknownUSN-8620-2: Linux kernel (Azure FIPS) vulnerabilitiesubuntu
- highUSN-8620-1: Linux kernel vulnerabilitiesubuntu
- highUSN-8619-1: Linux kernel (HWE) vulnerabilitiesubuntu
- highUSN-8595-3: Linux kernel (AWS) vulnerabilitiesubuntu
- highUSN-8574-3: Linux kernel vulnerabilitiesubuntu
- highUSN-8618-1: Linux kernel vulnerabilitiesubuntu
- highUSN-8610-1: Linux kernel (Azure CVM) vulnerabilitiesubuntu
- highUSN-8575-3: Linux kernel vulnerabilitiesubuntu
- highUSN-8609-1: Linux kernel (Azure CVM) vulnerabilitiesubuntu
- highUSN-8608-1: Linux kernel (Azure FIPS) vulnerabilitiesubuntu
Recent advisories for ppp
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.
- highCVE-2026-19036: A security flaw has been discovered in Shibby Tomato 1.28.0000. This affects the function sub_…nvd · 2026-08-06
- highCVE-2026-63803: In the Linux kernel, the following vulnerability has been resolved: hdlc_ppp: sync per-proto t…nvd · 2026-07-19
- highCVE-2026-63803: hdlc_ppp: sync per-proto timers before freeing hdlc statemsrc · 2026-07-14
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