Cyber Resilience

CVE-2021-26293

CriticalPublic PoC

Published: 04 March 2021

Published
04 March 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.5070 97.9th percentile
Risk Priority 50 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-26293 is a critical-severity Path Traversal (CWE-22) vulnerability in Afterlogic Aurora. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 2.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

An issue was discovered in AfterLogic Aurora through 8.5.3 and WebMail Pro through 8.5.3, when DAV is enabled. They allow directory traversal to create new files (such as an executable file under the web root). This is related to DAVServer.php…

more

in 8.x and DAV/Server.php in 7.x.

CWE(s)
CWE-22

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

afterlogic
aurora
≤ 8.5.3
afterlogic
webmail pro
≤ 8.5.3

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-10 Information Input Validation
addresses: CWE-22

Validates pathnames and filenames to prevent traversal outside intended directories.

References