Junos OS and Junos OS Evolved: A specific IS-IS SRv6 packet causes an rpd crash when flexible algorithm is used
An Improper Validation of Specified Quantity in Input vulnerability in the routing daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent attacker to cause a denial of service by sending a specific IS-IS SRv6 packet when SRv6 and Flexible Algorithm are enabled.
CVE-2026-101987
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-101987
Junos OS
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Junos OS Evolved
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Juniper Networks",
"product": "Junos OS",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "23.2R2-S7.7",
"versionType": "custom"
},
{
"status": "affected",
"version": "23.4",
"lessThan": "23.4R2-S8.13",
"versionType": "custom"
},
{
"status": "affected",
"version": "24.2",
"lessThan": "24.2R2-S5.5",
"versionType": "custom"
},
{
"status": "affected",
"version": "24.4",
"lessThan": "24.4R2-S5",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.2",
"lessThan": "25.2R2-S2",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.4",
"lessThan": "25.4R1-S3",
"versionType": "custom"
},
{
"status": "affected",
"version": "26.2",
"lessThan": "26.2R1-S2",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Juniper Networks",
"product": "Junos OS Evolved",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "23.2R2-S7.7-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "23.4",
"lessThan": "23.4R2-S8.11-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "24.2",
"lessThan": "24.2R2-S5.6-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "24.4",
"lessThan": "24.4R2-S5-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.2",
"lessThan": "25.2R2-S2-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.4",
"lessThan": "25.4R1-S3-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "26.2",
"lessThan": "26.2R1-S2-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "23.4X100",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.2X100",
"lessThan": "25.2X100-D35-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.4X300",
"lessThan": "25.4X300-D40-EVO",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-101987
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #38857 · Revision 1
- Added to Heist Feed
- Publisher date