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CVE-2021-26293

33
FAUCET Score

CVE-2021-26293 is a critical directory traversal vulnerability affecting AfterLogic Aurora and WebMail Pro versions through 8.5.3 when DAV is enabled. This flaw allows an unauthenticated attacker to create arbitrary files, including executables, within the web root. With a CVSS score of 9.8, the vulnerability is easily exploitable over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, its high EPSS score and FAUCET Risk Score indicate a significant potential for future exploitation. Community discussion and media coverage for this CVE are currently minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.5.3CPE matchmatch criteria
cpe:2.3:a:afterlogic:aurora:*:*:*:*:*:*:*:*
<= 8.5.3CPE matchmatch criteria
cpe:2.3:a:afterlogic:webmail_pro:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
7.11%
Probability of exploitation in next 30 days
EPSS Percentile
93.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0711 is in the 89th percentile among its peer group of 36,835 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

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

auroramail.wordpress.com / 2021/02/03/addressing-dav-related-vulnerability-in-webmail-and-aurora
ExploitThird Party Advisory