Microsoft · ipv6: sr: enforce exact attribute length for SEG6_ATTR_DST
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in e3ac68c1cdc2535d127b2bfd50c263d16c8e4199 : update Microsoft when convenient.
Data as of 2 Nov 2026, 10:58 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in e3ac68c1cdc2535d127b2bfd50c263d16c8e4199, 195813bb7324c338eaba0aaa02b18681ee65b670, 94214cf0a08dd2c5f37aeeea46078d9dfe8e4a0e +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 |
|---|---|---|
| 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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Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
A vulnerability identified as CVE-2026-98531 affects Microsoft products version 3.0 and 4.0 related to IPv6 Segment Routing (SR). The issue involves enforcing exact attribute length for the SEG6_ATTR_DST attribute. No CVSS score or detailed impact information is provided.