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CVE-2021-35491

26
FAUCET Score

CVE-2021-35491 describes a Cross-Site Request Forgery (CSRF) vulnerability in Wowza Streaming Engine versions through 4.8.11+5. This flaw allows an unauthenticated remote attacker to delete user accounts by manipulating the userName parameter in a GET request to /enginemanager/server/user/delete.htm, due to the absence of a CSRF token. The vulnerability has a CVSS score of 8.1 (High), indicating a significant risk. It is easily exploitable over the network with low attack complexity, requiring user interaction, and can lead to high impact on integrity and availability by allowing unauthorized account deletion. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting low public awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.8.14CPE matchmatch criteria
cpe:2.3:a:wowza:streaming_engine:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 56th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 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 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

n4nj0.github.io / advisories/wowza-streaming-engine-i
Third Party Advisory
gruppotim.it / redteam
ExploitThird Party Advisory
wowza.com / docs/wowza-streaming-engine-4-8-14-release-notes
Release NotesVendor Advisory