CVE-2022-35261Public exploitNetwork attack vector

Web server crash via invalid hash index

Published Oct 25, 2022 · Updated Apr 15, 2025

Denial of service in Robustel R1510 3.1.16 and 3.3.0 allows remote authenticated users to crash its web server via a crafted POST. A POST without an uploaded file leaves webs->files at -1, and hashFirst uses that value as an array index after a non-enforcing assertion. Administrative access to /action/import_authorized_keys/ is required; exploitation terminates the web-server process without reported data loss.

CVSS severity4.9
Medium
EPSS probability1.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Robustel R1510 3.1.16 and 3.3.0 allows remote authenticated users to crash its web server via a crafted POST. A POST without an uploaded file leaves webs->files at -1, and hashFirst uses that value as an array index after a non-enforcing assertion. Administrative access to /action/import_authorized_keys/ is required; exploitation terminates the web-server process without reported data loss.

The record

CVE
CVE-2022-35261
Published
Oct 25, 2022
Updated
Apr 15, 2025
Vendor
Robustel
Product
R1510
Classifications
CWE-125, T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.1.16
  2. Affected versionversion=3.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Robustel · R1510version=3.1.16; version=3.3.0

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.9Cisco TalosCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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