CVE-2023-35966: Two heap-based buffer overflow vulnerabilities exist in the httpd manage_post functionality of Yifan YF325 v1.

This month

CRITICAL 9.8REMOTEMITIGATE

CVE-2023-35966 is a critical-severity flaw (CVSS 9.8) affecting yf325 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Two heap-based buffer overflow vulnerabilities exist in the httpd manage_post functionality of Yifan YF325 v1.0_20221108. A specially crafted network request can lead to a heap buffer overflow. An attacker can send a network request to trigger these vulnerabilities.This integer overflow result is used as argument for the realloc function.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-190, CWE-787
Published	2023-10-11
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: yifanwireless

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

Am I affected?

Timeline

2023-10-11 16:15 UTCPublished CVE record published
2026-06-17 06:05 UTCUpdated Record last modified

yifanwireless yf325 firmware MITIGATE

Affected: 1.0_20221108

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0_20221108

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-2023-35966?

yf325 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-35966 being exploited?

CVE-2023-35966 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-2023-35966 affect?

CVE-2023-35966 affects yf325 firmware. Severity is critical (CVSS 9.8). Two heap-based buffer overflow vulnerabilities exist in the httpd manage_post functionality of Yifan YF325 v1.0_20221108. A specially crafted network request can lead to a heap buffer overflow. An attacker can send a network request to trig

How urgent is CVE-2023-35966?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Apache HTTP Server vulnerabilities

Related CVEs

CVE-2023-35968 CRITICAL 9.8 MITIGATE Two heap-based buffer overflow vulnerabilities exist in the gwcfg_cgi_set_manage_post_data functionality of Yi
CVE-2023-35967 CRITICAL 9.8 MITIGATE Two heap-based buffer overflow vulnerabilities exist in the gwcfg_cgi_set_manage_post_data functionality of Yi
CVE-2023-35965 CRITICAL 9.8 MITIGATE Two heap-based buffer overflow vulnerabilities exist in the httpd manage_post functionality of Yifan YF325 v1.
CVE-2023-35056 HIGH 8.8 MITIGATE A buffer overflow vulnerability exists in the httpd next_page functionality of Yifan YF325 v1.0_20221108
CVE-2023-35055 HIGH 8.8 MITIGATE A buffer overflow vulnerability exists in the httpd next_page functionality of Yifan YF325 v1.0_20221108

References

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