Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-26917

18
FAUCET Score

CVE-2021-26917 affects PyBitmessage through version 0.6.3.2, allowing an attacker to write screen captures to arbitrary directories by manipulating the apinotifypath value. This vulnerability is rated Medium severity (CVSS 5.5), indicating a low attack complexity and requiring local access with low privileges, potentially leading to high confidentiality impact. While there is no evidence of active exploitation or public exploit code, and community discussion is minimal, the potential for unauthorized screen capture remains a concern.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.6.3.2CPE matchmatch criteria
cpe:2.3:a:bitmessage:pybitmessage:*:*:*:*:*:*:*:*

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
0.55%
Probability of exploitation in next 30 days
EPSS Percentile
42.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0055 is in the 93rd percentile among its peer group of 15,940 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

No media coverage found for this CVE.

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 (1)

github_advisorypatch availablevia nvd_reference
View patch

References

attack.mitre.org / techniques/T1113
Third Party Advisory
github.com / Bitmessage/PyBitmessage/blob/f381721bec31641002e2f240309600c4994855a7/src/api.py
PatchThird Party Advisory
github.com / Bitmessage/PyBitmessage/releases
Release NotesThird Party Advisory
poal.co / s/technology/290479
ExploitThird Party Advisory