Event Monitor Cyber
EM-20261104-2ILS VulnerabilityHigh severity

Firecracker Vulnerability (CVE-2026-122192)

CVE-2026-122192

ShareXFacebookBlueskyThreadsRedditEmail
Status
Developing

Since : signals keep joining.

First Signal
Nov 04 20:19 UTCC6 NVD CVE API 2.0
Page Born
Nov 04 21:47 UTCsecond source joined
Last Signal
Nov 04 21:47 UTC60 min before snapshot
Sources
20 official · 2 research, news or crowd
Open For
2 hoursso far

Life Of This Page

  1. 1
    Born
    A second, independent source names it.
  2. 2
    Developing · Now
    New signals join; severity can move.
  3. 3
    Confirmed
    Not yet
    CISA KEV lists it, or exploitation in the wild is reported.
  4. 4
    Resolved
    Not yet
    Past the fix deadline and 14 days with no new signal.
  5. 5
    Archived
    Not yet
    30 days after resolved. Read only; the link keeps working. Reopens if it comes back.

The address and ID never change. A correction is logged, never overwritten. If two pages turn out to be one incident, the later one points to the earlier.

Vulnerability Lifecycle

  1. Disclosed: reached
    Nov 04 20:19 UTC
    C6 NVD published
  2. Scored: reached
    Nov 04 20:19 UTC
    CVSS 7.1
  3. Exploited: not yet
    Not yet
    No exploitation reported
  4. Advisories: not yet
    Not yet
    None yet
  5. Vendor Response: not yet
    Not yet
    None in sources yet
  6. Resolved: not yet
    Not yet
    After 14 quiet days

Timeline

16:0018:0020:0022:00BornC6 NVD CVE API 2.0C160 Reddit r/netsec

Point at a mark to read it. Squares are signals, colored by severity; every one is also listed under Signals.

Signals

  1. Escaping AWS Firecracker from guest userspace: VMM memory corruption (CVE-2026-122192) (opens source in a new tab) We just published our research on escaping Firecracker microVMs, coordinated with AWS. The interesting part is how a guest can end up accessing memory belonging to the Firecracker process running outside the VM. The vuln… Info severityCrowdC160 Reddit r/netsec
  2. CVE-2026-122192 (CVSS 7.1) (opens source in a new tab) Improper handling of a failed memory remap in Firecracker versions 0.23.0 through 1.16.1 might allow a guest user with root privileges to read or modify Firecracker VMM process memory via balloon or virtio-mem discard re… High severityDatabaseC6 NVD CVE API 2.0