CVE-2026-101980 (GCVE-0-2026-101980)
Vulnerability from cvelistv5 – Published: 2026-10-14 16:17 – Updated: 2026-10-14 20:46
VLAI
EPSS
VEX
Title
Junos OS: Malformed Extended Echo requests cause a Routing Engine reboot when Extended Echo is enabled
Summary
An Integer Underflow vulnerability in the kernel of Juniper Networks Junos OS with Extended Echo configured allows an unauthenticated, network-based attacker to cause a denial of service by a kernel crash.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 20:36 UTC
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA112188 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 23.2R2-S7.7
(custom)
Affected: 23.4 , < 23.4R2-S8.13 (custom) Affected: 24.2 , < 24.2R2-S5.5 (custom) Affected: 24.4 , < 24.4R2-S5 (custom) Affected: 25.2 , < 25.2R2-S2 (custom) Affected: 25.4 , < 25.4R1-S3 (custom) Affected: 26.2 , < 26.2R1-S2 (custom) |
guessed |
Date Public
2026-10-14 16:00
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
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- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.