CVE-2022-35261: A denial of service vulnerability exists in the web_server hashFirst functionality of Robustel R1510 3.1.16 an

This week

HIGH 7.5REMOTEMITIGATE

CVE-2022-35261 is a high-severity flaw (CVSS 7.5) affecting r1510 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A denial of service vulnerability exists in the web_server hashFirst functionality of Robustel R1510 3.1.16 and 3.3.0. A specially-crafted network request can lead to denial of service. An attacker can send a sequence of requests to trigger this vulnerability.This denial of service is in the `/action/import_authorized_keys/` API.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-125
Published	2022-10-25
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: robustel

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-10-25 17:15 UTCPublished CVE record published
2026-06-17 04:51 UTCUpdated Record last modified

robustel r1510 firmware MITIGATE

Affected: 3.1.16 · 3.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1.16

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-35261?

r1510 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-35261 being exploited?

CVE-2022-35261 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-35261 affect?

CVE-2022-35261 affects r1510 firmware. Severity is high (CVSS 7.5). A denial of service vulnerability exists in the web_server hashFirst functionality of Robustel R1510 3.1.16 and 3.3.0. A specially-crafted network request can lead to denial of service. An attacker can send a sequence of requests to trigger

How urgent is CVE-2022-35261?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-35271 HIGH 7.5 MITIGATE A denial of service vulnerability exists in the web_server hashFirst functionality of Robustel R1510 3.1.16 an
CVE-2022-35270 HIGH 7.5 MITIGATE A denial of service vulnerability exists in the web_server hashFirst functionality of Robustel R1510 3.1.16 an
CVE-2022-35269 HIGH 7.5 MITIGATE A denial of service vulnerability exists in the web_server hashFirst functionality of Robustel R1510 3.1.16 an
CVE-2022-35268 HIGH 7.5 MITIGATE A denial of service vulnerability exists in the web_server hashFirst functionality of Robustel R1510 3.1.16 an
CVE-2022-35267 HIGH 7.5 MITIGATE A denial of service vulnerability exists in the web_server hashFirst functionality of Robustel R1510 3.1.16 an

References

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