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CVE-2021-34805

50
FAUCET Score

CVE-2021-34805 describes a directory traversal vulnerability in FAUST iServer versions prior to 9.0.019.019.7, allowing attackers to access arbitrary files on the operating system by manipulating URL requests. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating a severe risk due to its network-based attack vector, low attack complexity, and potential for high confidentiality impact without requiring user interaction. While not currently listed on the CISA KEV catalog, exploit intelligence shows a high-severity Nuclei template for Local File Inclusion, suggesting readily available proof-of-concept code. Despite this, there is no evidence of active exploitation, Metasploit modules, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 9.0.017.017.1-3, < 9.0.019.019.7CPE matchmatch criteria
cpe:2.3:a:land-software:faust_iserver:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
26.82%
Probability of exploitation in next 30 days
EPSS Percentile
97.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-34805 · Mar 19, 2022
This CVE's current EPSS score of 0.2682 is in the 96th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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/165701/FAUST-iServer-9.0.018.018.4-Local-File-Inclusion.html
ExploitThird Party AdvisoryVDB Entry
sec-consult.com / vulnerability-lab
ExploitThird Party Advisory
land-software.de / lfs.fau
ProductVendor Advisory