CVE-2018-12684: Out-of-bounds Read in the send_ssi_file function in civetweb.c in CivetWeb through 1.10 allows attackers to ca

Q: How do I fix CVE-2018-12684?

civetweb: upgrade to newer than 1.10. Exact commands for each OS are on this page.

Q: Is CVE-2018-12684 being exploited?

CVE-2018-12684 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-12684 affect?

CVE-2018-12684 affects civetweb. Severity is high (CVSS 7.1). Out-of-bounds Read in the send_ssi_file function in civetweb.c in CivetWeb through 1.10 allows attackers to cause a Denial of Service or Information Disclosure via a crafted SSI file.

This month

HIGH 7.1UPGRADE

CVE-2018-12684 is a high-severity flaw (CVSS 7.1) affecting civetweb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Out-of-bounds Read in the send_ssi_file function in civetweb.c in CivetWeb through 1.10 allows attackers to cause a Denial of Service or Information Disclosure via a crafted SSI file.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-125, CWE-200
Published	2018-06-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: civetweb project

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

Am I affected?

Timeline

2018-06-22 19:29 UTCPublished CVE record published
2026-06-17 01:38 UTCUpdated Record last modified

civetweb project civetweb UPGRADE

Affected: <= 1.10

Fixed in: newer than 1.10

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.10 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade civetweb

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade civetweb

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2018-12684?

civetweb: upgrade to newer than 1.10. Exact commands for each OS are on this page.

Is CVE-2018-12684 being exploited?

CVE-2018-12684 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-2018-12684 affect?

CVE-2018-12684 affects civetweb. Severity is high (CVSS 7.1). Out-of-bounds Read in the send_ssi_file function in civetweb.c in CivetWeb through 1.10 allows attackers to cause a Denial of Service or Information Disclosure via a crafted SSI file.

How urgent is CVE-2018-12684?

Priority 41/100. High severity

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References

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