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CVE-2021-40845

29
FAUCET Score

CVE-2021-40845 describes an unrestricted file upload vulnerability in the AlphaWeb XE component of Zenitel AlphaCom XE Audio Server versions through 11.2.3.10. This flaw allows authenticated attackers to upload arbitrary PHP code via the Custom Scripts section, leading to remote code execution. With a CVSS score of 8.8 (HIGH), this vulnerability presents a significant risk due to its low attack complexity and high impact on confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, the high FAUCET Risk Score of 94/100 indicates its potential severity.

Impacted Technologies

VendorProductVersion(s)CPE
<= 11.2.3.10CPE matchmatch criteria
cpe:2.3:a:zenitel:alphacom_xe_audio_server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.68%
Probability of exploitation in next 30 days
EPSS Percentile
90.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0468 is in the 90th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/164149/Zenitel-AlphaCom-XE-Audio-Server-11.2.3.10-Shell-Upload.html
Third Party AdvisoryVDB Entry
packetstormsecurity.com / files/164160/Zenitel-AlphaCom-XE-Audio-Server-11.2.3.10-Shell-Upload.html
ExploitThird Party AdvisoryVDB Entry
github.com / ricardojoserf/CVE-2021-40845
ExploitThird Party Advisory
ricardojoserf.github.io / CVE-2021-40845
ExploitThird Party Advisory