CVE-2013-5019: Stack-based buffer overflow in Ultra Mini HTTPD 1.21 allows remote attackers to execute arbitrary code via a l

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HIGH 10.0DOWNGRADE

CVE-2013-5019 is a high-severity flaw (CVSS 10.0) affecting ultra mini httpd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in Ultra Mini HTTPD 1.21 allows remote attackers to execute arbitrary code via a long resource name in an HTTP request.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	63.6% (top 1%)
CISA exploited list	No
Weakness	CWE-119
Published	2013-07-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: vector

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

Am I affected?

Timeline

2013-07-31 13:20 UTCPublished CVE record published
2026-06-16 23:58 UTCUpdated Record last modified

vector ultra mini httpd DOWNGRADE

Affected: 1.21

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.21

1. Check installed version

apt-cache policy ultra-mini-httpd || rpm -q ultra-mini-httpd || ultra-mini-httpd --version

2. No fixed release: DOWNGRADE to a release before 1.21 (Debian / Ubuntu)

apt-cache madison ultra-mini-httpd sudo apt install ultra-mini-httpd=<VERSION_BEFORE_1.21> sudo apt-mark hold ultra-mini-httpd

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

dnf --showduplicates list ultra-mini-httpd sudo dnf downgrade ultra-mini-httpd-<VERSION_BEFORE_1.21> sudo dnf versionlock add ultra-mini-httpd

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: Ultra Mini HTTPd - Remote Stack Buffer Overflow (Metasploit)
Exploit-DB: Ultra Mini HTTPd 1.21 - 'POST' Remote Stack Buffer Overflow (1)
Exploit-DB: Ultra Mini HTTPd 1.21 - 'POST' Remote Stack Buffer Overflow (2)
Exploit-DB: Ultra Mini HTTPd 1.21 - Remote Stack Buffer Overflow
Exploit-DB: Ultra MiniHTTPd 1.2 - 'GET' Remote Stack Buffer Overflow (PoC)
Metasploit: Ultra Mini HTTPD Stack Buffer Overflow

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-2013-5019?

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

Is CVE-2013-5019 being exploited?

CVE-2013-5019 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-2013-5019 affect?

CVE-2013-5019 affects ultra mini httpd. Severity is high (CVSS 10.0). Stack-based buffer overflow in Ultra Mini HTTPD 1.21 allows remote attackers to execute arbitrary code via a long resource name in an HTTP request.

How urgent is CVE-2013-5019?

Priority 65/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference

Software pages

Apache HTTP Server vulnerabilities

Related CVEs

CVE-2024-0263 MEDIUM 5.3 DOWNGRADE A vulnerability was found in ACME Ultra Mini HTTPd 1.21

References

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