Microsoft · squashfs: Add dictionary size range check to prevent shift-out-of-bounds
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in e1ca4e3a380ef3e8f46ce006f1146392e3f32c98 : update Microsoft when convenient.
Data as of 2 Nov 2026, 10:58 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in e1ca4e3a380ef3e8f46ce006f1146392e3f32c98, c68e0068a236f9a7dfc19720bdf11e5d80a85089, b02948a23455f8190a53887b2d2c13ae1d360cea +5
Exploitation evidence
Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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Description
A vulnerability identified as CVE-2026-98636 affects Microsoft products involving squashfs, where a missing dictionary size range check could lead to a shift-out-of-bounds condition. The vulnerability is present in versions 3.0 and 4.0. No CVSS score or detailed impact information is provided.