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CVE-2026-73467· NVD / CVE Program· CNA Arista

On affected platforms running Arista EOS, under certain circumstances plaintext shared secrets for configured Terminal Access Controller Access-Control System P

On affected platforms running Arista EOS, under certain circumstances plaintext shared secrets for configured Terminal Access Controller Access-Control System Plus (TACACS+) servers

MediumCVSS 6.0 · v4.0—No exploit No fix recorded
Published
Sep 15, 2026
Updated
Sep 16, 2026
EPSS
0.1% · 2th percentile
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Report tools

JSON

Action score

24

Monitor

Low priority for now.

CVSS
24 / 40 · 6.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Arista
6.3
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Affected systems

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Arista). Independent of NVD's CPE analysis and usually ahead of it.

  • Arista Networks EOS

    • 4.36.0 and later · up to and including 4.36.1Faffected
    • 4.35.0 and later · up to and including 4.35.4Maffected
    • 4.34.0 and later · up to and including 4.34.7Maffected
    • 0.0.0 and later · up to and including 4.33.9Maffected
    • up to and including 4.32.0affected
    • up to and including 4.31.0affected

Same product

arista networks: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-73453Security Advisory 0174
    38Monitor
  • CVE-2026-73461Security Advisory 0163
    37Monitor
  • CVE-2026-73447Security Advisory 0162 - gNSI Certz/Bootz OS Command Injection via Crafted Rotate Request
    37Monitor
  • CVE-2026-73456Under certain circumstances, an unauthenticated gNPSI client can craft a malicious request to allow arbitrary code execution, granting an attacker full administ
    36Monitor
  • CVE-2026-73458On affected platforms running Arista EOS with authenticated Bidirectional Forwarding Detection (BFD) sessions configured, a specially crafted packet can cause t
    36Monitor
  • CVE-2025-1260On affected platforms running Arista EOS with OpenConfig configured, a gNOI request can be run when it should have been rejected.
    36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-734650 days apartOn affected platforms running Arista EOS, under certain circumstances plaintext private keys
    24Monitor
  • CVE-2026-734660 days apartOn affected platforms running Arista EOS, under certain circumstances plaintext user passwords
    24Monitor
  • CVE-2026-734571 days apartUnder certain circumstances, the gNPSI client credentials might be logged in clear text, in local or remote accounting logs to authenticated users.
    24Monitor
  • CVE-2025-3456386 days apartOn affected platforms running Arista EOS, the global common encryption key configuration may be logged in clear text, in local or remote accounting logs. Knowle
    15Monitor
  • CVE-2026-734421 days apartOn affected platforms running Arista EOS with VRRP enabled, the peer device VRRP authentication credentials are logged in cleartext on the switch, allowing an a
    8Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • Administrator privileges are required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
Integrity
Availability
Attack vector
Local
Attack complexity
High
Privileges required
High
User interaction
P
Scope
X

Weakness class (CWE)

CWE-532 · Insertion of Sensitive Information into Log File

CVSS vector

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records