CVE.org (no NVD analysis yet)· CNA WatchGuard

CVE-2026-82332: Fireware OS Improper Authentication in AuthPoint MFA Verification Allows Session Hijacking

Noroxi assessment

Priority: Monitor (action score 22/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.11% (FIRST EPSS).
Someone with local access to the system can trigger it. No account or password is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

An improper authentication vulnerability in WatchGuard Fireware OS's AuthPoint multi-factor authentication process allows a local, unauthenticated attacker on the appliance to hijack another user's in-progress MFA session by supplying a specially crafted request and convincing the victim user to accept an MFA push notification.

MediumCVSS 5.7 · v4.0—No exploit No fix recorded

Auth bypass

EUVD-2026-111155

Published: Oct 27, 2026
Updated: Nov 4, 2026
EPSS: 0.1% · 1th percentile
CWE: CWE-287

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 22 / 40 · 5.7 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.1%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · WatchGuard: 5.6; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

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

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

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

WatchGuard Fireware OS
- 2025.1 and later · before 2026.4affected
- 12.7 and later · before 12.12.4affected

Same product

watchguard: all records

Other highest-scoring records for the same primary product.

CVE-2026-103594Fireware OS Stack Buffer Overflow in WireGuard Configuration Allows Remote Code Execution
38Monitor
CVE-2026-90465Fireware OS Missing Authentication in FireCluster Sync Allows Privilege Escalation
37Monitor
CVE-2026-19318Fireware OS Pre-Authentication Stack Buffer Overflow in iked Allows Remote Code Execution
37Monitor

Published before and after this one in the same product

← EarlierCVE-2026-112710Oct 27, 2026 · Fireware OS Heap Buffer Overflow in AD Authentication Service Allows Pre-Authentication Remote Code Execution
36Monitor
← EarlierCVE-2026-113881Oct 27, 2026 · Fireware OS Stack Buffer Overflow in VPN Network Access Enforcement Allows Unprivileged Code Execution
24Monitor
Later →CVE-2026-90442Oct 27, 2026 · Fireware OS Authenticated Stack Buffer Overflow in certd Allows Denial of Service
34Monitor

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.

WatchGuard AI Security Researchfinder
Laurent GAFFIE , secorizon.comfinder

Variant candidates

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

—

Chain candidates

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

CVE-2026-904420 days apartFireware OS Authenticated Stack Buffer Overflow in certd Allows Denial of Service
34Monitor
CVE-2026-7800861 days apartFireware OS Authenticated Buffer Overflow in wgagent
34Monitor
CVE-2026-938640 days apartFireware OS Link Following in firewalld Allows Local Arbitrary File Overwrite as Root
28Monitor
CVE-2026-1138810 days apartFireware OS Stack Buffer Overflow in VPN Network Access Enforcement Allows Unprivileged Code Execution
24Monitor

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.
No account or password is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Local
Attack complexity: Low
Privileges required: None
User interaction: A
Scope: X

Weakness class (CWE)

CWE-287 · Improper Authentication

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/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

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

The bug in code

The whole CWE-287 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1app.use("/admin", requireSession, adminRouter);
2

3// Route added later skips the middleware
4app.post("/admin-api/config", updateConfig);

Fixed

1const admin = express.Router();
2admin.use(requireSession, requireRole("admin"));
3

4admin.post("/config", updateConfig);
5app.use("/admin", admin);

Attack context

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

Attack patterns (CAPEC)

ATT&CK techniques

Change log

SSVC exploitation— → noneNov 4, 2026, 10:07 PM UTC
Exploit maturity— → noneOct 27, 2026, 5:07 PM UTC
CVSS5.6 → 5.7Oct 27, 2026, 5:07 PM UTC

For records you follow, these changes also arrive as notifications. →

References

psirt.watchguard.com/CVE-2026-82332

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

All records