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CVE-2020-6972

29
FAUCET Score

CVE-2020-6972 is a critical authentication bypass vulnerability affecting Honeywell Notifier Web Server (NWS) version 3.50 and earlier. An attacker can exploit this flaw via a capture-replay attack from a web browser, gaining unauthorized access to the fire alarm system. With a CVSS score of 9.1 (CRITICAL), this vulnerability is easily exploitable over the network with no user interaction, leading to high impact on confidentiality and integrity. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.50CPE matchmatch criteria
cpe:2.3:a:honeywell:notifier_webserver:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.32%
Probability of exploitation in next 30 days
EPSS Percentile
68.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0132 is in the 55th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

coollabspatch availablevia llm_extracted

Vendor Advisories (1)

coollabsllm-coollabs-295721192e1ff196CRITICAL

NWS Authentication Bypass and Path Traversal Vulnerabilities ICSA-20-051-03

Feb 20, 2020

References

us-cert.gov / ics/advisories/icsa-20-051-03
Third Party AdvisoryUS Government Resource