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CVE-2021-1725

20
FAUCET Score

CVE-2021-1725 is an information disclosure vulnerability affecting the Microsoft Bot Framework SDK. This vulnerability, rated Medium with a CVSS score of 5.5, allows a local, low-privileged attacker to achieve high confidentiality impact without user interaction. There is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:bot_framework_software_development_kit:-:*:*:*:*:.net_framework:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:bot_framework_software_development_kit:-:*:*:*:*:javascript:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:bot_framework_software_development_kit:-:*:*:*:*:python:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.06%
Probability of exploitation in next 30 days
EPSS Percentile
60.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0106 is in the 97th percentile among its peer group of 15,938 CVEs.

Social Chatter

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

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

microsoftpatch availablevia msrc
Product: Bot Framework SDK for .NET Framework
View patch
microsoftpatch availablevia msrc
Product: Bot Framework SDK for JavaScript
View patch
microsoftpatch availablevia msrc
Product: Bot Framework SDK for Python
View patch
npmpatch availablevia ghsa
Product: botframework-connectorFixed in: 4.7.3
npmpatch availablevia ghsa
Product: botframework-connectorFixed in: 4.10.3
npmpatch availablevia ghsa
Product: botframework-connectorFixed in: 4.8.1
npmpatch availablevia ghsa
Product: botframework-connectorFixed in: 4.9.4

Vendor Advisories (2)

npmGHSA-fvcj-hvfw-7f2vmedium

botframework-connector vulnerable to Improper Authentication

Mar 8, 2021
microsoft2021-Jan/CVE-2021-1725Important

Bot Framework SDK Information Disclosure Vulnerability

Jan 12, 2021

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2021-1725
msrc.microsoft.com / update-guide/vulnerability/CVE-2021-1725