THREATPORT/VULNERABILITY/CVE-2022-26496
CRITICAL SEVERITY

CVE-2022-26496

Network Block Device vulnerability

CVSS
9.8
EPSS
3.5%
EPSS pct
88th
Exploited
No known
In nbd-server in nbd before 3.24, there is a stack-based buffer overflow. An attacker can cause a buffer overflow in the parsing of the name field by sending a crafted NBD_OPT_INFO or NBD_OPT_GO message with an large value as the length of the name.
Affected vendor
Network Block Device Project
Affected product
Network Block Device
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2022-03-06

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 3.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2022-26496

  • Confirm whether Network Block Device Project Network Block Device is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2022-26496.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2022-26496

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2022-26496 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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