---
title: "CVE-2026-77167: Unknown Product - Denial of Service"
description: "An unspecified product contains a denial of service vulnerability caused by unauthenticated arbitrary writes to the oc_share_external database table via the federated share endpoint, letting attackers cause persistent denial of service, exploit requires no authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-77167/
---

# CVE-2026-77167 Unknown Product - Denial of Service

An unspecified product contains a denial of service vulnerability caused by unauthenticated arbitrary writes to the oc\_share\_external database table via the federated share endpoint, letting attackers cause persistent denial of service, exploit requires no authentication.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.32% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-77167)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Published

27 October 2026

Updated

29 October 2026

Weakness

[CWE-400](https://cwe.mitre.org/data/definitions/400.html)

## Vendor fix

Update to the latest version or apply vendor patches addressing arbitrary writes to oc\_share\_external table.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-77167](https://nvd.nist.gov/vuln/detail/CVE-2026-77167)
- [https://hackerone.com/reports/3679640](https://hackerone.com/reports/3679640)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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