CVE-2022-47040: An issue in ASKEY router RTF3505VW-N1 BR_SV_g000_R3505VMN1001_s32_7 allows attackers to escalate privileges vi

Routine

HIGH 7.8MITIGATE

CVE-2022-47040 is a high-severity flaw (CVSS 7.8) affecting rtf3505vw-n1 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue in ASKEY router RTF3505VW-N1 BR_SV_g000_R3505VMN1001_s32_7 allows attackers to escalate privileges via running the tcpdump command after placing a crafted file in the /tmp directory and sending crafted packets through port 80.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 72%)
CISA exploited list	No
Weakness	CWE-276
Published	2023-01-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: askey

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

Am I affected?

Timeline

2023-01-26 21:18 UTCPublished CVE record published
2026-06-17 05:12 UTCUpdated Record last modified

askey rtf3505vw-n1 firmware MITIGATE

Affected: br_sv_g000_r3505vmn1001_s32_7

Fixed in: no fixed release known

Safe to downgrade to: a release before br_sv_g000_r3505vmn1001_s32_7

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-2022-47040?

rtf3505vw-n1 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-47040 being exploited?

CVE-2022-47040 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-2022-47040 affect?

CVE-2022-47040 affects rtf3505vw-n1 firmware. Severity is high (CVSS 7.8). An issue in ASKEY router RTF3505VW-N1 BR_SV_g000_R3505VMN1001_s32_7 allows attackers to escalate privileges via running the tcpdump command after placing a crafted file in the /tmp directory and sending crafted packets through port 80.

How urgent is CVE-2022-47040?

Priority 39/100. High severity; Public exploit reference

References

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