CVE-2025-3267: A vulnerability, which was classified as critical, was found in qinguoyi TinyWebServer up to 1.0

Routine

MEDIUM 6.3DOWNGRADE

CVE-2025-3267 is a medium-severity flaw (CVSS 6.3) affecting tinywebserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability, which was classified as critical, was found in qinguoyi TinyWebServer up to 1.0. This affects an unknown part of the file /http/http_conn.cpp. The manipulation of the argument name/password leads to sql injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-74, CWE-89
Published	2025-04-04
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: qinguoyi

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

Am I affected?

Timeline

2025-04-04 20:15 UTCPublished CVE record published
2026-06-17 09:19 UTCUpdated Record last modified

qinguoyi tinywebserver DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy tinywebserver || rpm -q tinywebserver || tinywebserver --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison tinywebserver sudo apt install tinywebserver=<VERSION_BEFORE_1.0> sudo apt-mark hold tinywebserver

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list tinywebserver sudo dnf downgrade tinywebserver-<VERSION_BEFORE_1.0> sudo dnf versionlock add tinywebserver

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-3267?

tinywebserver: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-3267 being exploited?

CVE-2025-3267 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-2025-3267 affect?

CVE-2025-3267 affects tinywebserver. Severity is medium (CVSS 6.3). A vulnerability, which was classified as critical, was found in qinguoyi TinyWebServer up to 1.0. This affects an unknown part of the file /http/http_conn.cpp. The manipulation of the argument name/password leads to sql injection. It is pos

How urgent is CVE-2025-3267?

Priority 38/100. Public exploit reference

Related CVEs

CVE-2025-3268 MEDIUM 5.3 UPGRADE A vulnerability has been found in qinguoyi TinyWebServer up to 1.0 and classified as critical
CVE-2025-3266 HIGH 7.3 DOWNGRADE A vulnerability, which was classified as critical, has been found in qinguoyi TinyWebServer up to 1.0

References

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