CVE-2007-3009: Format string vulnerability in the MprLogToFile::logEvent function in Mbedthis AppWeb 2.0.5-4, when the build

This month

MEDIUM 4.3DOWNGRADE

CVE-2007-3009 is a medium-severity flaw (CVSS 4.3) affecting mbedthis appweb http server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Format string vulnerability in the MprLogToFile::logEvent function in Mbedthis AppWeb 2.0.5-4, when the build supports logging but the configuration disables logging, allows remote attackers to cause a denial of service (daemon crash) via format string specifiers in the HTTP scheme, as demonstrated by a "GET %n://localhost:80/" request.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	2.2% (top 17%)
CISA exploited list	No
Published	2007-06-04
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mbedthis software

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2007-06-04 17:30 UTCPublished CVE record published
2026-06-16 22:40 UTCUpdated Record last modified

mbedthis software mbedthis appweb http server DOWNGRADE

Affected: 2.0.5-4

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.5-4

1. Check installed version

apt-cache policy mbedthis-appweb-http-server || rpm -q mbedthis-appweb-http-server || mbedthis-appweb-http-server --version

2. No fixed release: DOWNGRADE to a release before 2.0.5-4 (Debian / Ubuntu)

apt-cache madison mbedthis-appweb-http-server sudo apt install mbedthis-appweb-http-server=<VERSION_BEFORE_2.0.5-4> sudo apt-mark hold mbedthis-appweb-http-server

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

dnf --showduplicates list mbedthis-appweb-http-server sudo dnf downgrade mbedthis-appweb-http-server-<VERSION_BEFORE_2.0.5-4> sudo dnf versionlock add mbedthis-appweb-http-server

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Mbedthis AppWeb 2.2.2 - URL Protocol Format String

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-2007-3009?

mbedthis appweb http server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-3009 being exploited?

CVE-2007-3009 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-2007-3009 affect?

CVE-2007-3009 affects mbedthis appweb http server. Severity is medium (CVSS 4.3). Format string vulnerability in the MprLogToFile::logEvent function in Mbedthis AppWeb 2.0.5-4, when the build supports logging but the configuration disables logging, allows remote attackers to cause a denial of service (daemon crash) via f

How urgent is CVE-2007-3009?

Priority 41/100. Public exploit reference

Related CVEs

CVE-2007-3008 MEDIUM 4.3 DOWNGRADE Mbedthis AppWeb before 2.2.2 enables the HTTP TRACE method, which has unspecified impact probably related to r
CVE-2004-2317 MEDIUM 5.0 DOWNGRADE Information leak in Mbedthis AppWeb HTTP server 1.0 through 1.1.2 allows remote attackers to obtain sensitive
CVE-2004-2315 MEDIUM 5.0 DOWNGRADE Mbedthis AppWeb HTTP server before 1.0.2 allows remote attackers to cause a denial of service (crash) via an e
CVE-2004-2213 MEDIUM 5.0 DOWNGRADE Mbedthis AppWeb HTTP server before 1.1.3 allows remote attackers to obtain the source code for scripts via a (

References

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