CVE-2017-5522: Stack-based buffer overflow in MapServer before 6.0.6, 6.2.x before 6.2.4, 6.4.x before 6.4.5, and 7.0.x befor

Q: How do I fix CVE-2017-5522?

debian linux: mitigate or apply the listed mitigation; mapserver: upgrade to newer than 6.0.5. Exact commands for each OS are on this page.

Q: Is CVE-2017-5522 being exploited?

CVE-2017-5522 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-2017-5522 affect?

CVE-2017-5522 affects debian linux, mapserver. Severity is critical (CVSS 9.8). Stack-based buffer overflow in MapServer before 6.0.6, 6.2.x before 6.2.4, 6.4.x before 6.4.5, and 7.0.x before 7.0.4 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving WFS get featu

Q: How urgent is CVE-2017-5522?

Priority 67/100. Critical severity; EPSS top 8%: very likely to be exploited; Remotely exploitable, no login, no user action; On your watchlist

This week

CRITICAL 9.8REMOTEWATCHLISTMITIGATEUPGRADE

CVE-2017-5522 is a critical-severity flaw (CVSS 9.8) affecting debian linux, mapserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in MapServer before 6.0.6, 6.2.x before 6.2.4, 6.4.x before 6.4.5, and 7.0.x before 7.0.4 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving WFS get feature requests.

Why this priority

Critical severity
EPSS top 8%: very likely to be exploited
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	4.8% (top 8%)
CISA exploited list	No
Weakness	CWE-119
Published	2017-03-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: debian · osgeo

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

Am I affected?

Timeline

2017-03-15 16:59 UTCPublished CVE record published
2026-06-17 01:20 UTCUpdated Record last modified

debian debian linux MITIGATE

Affected: 8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

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.

osgeo mapserver UPGRADE

Affected: <= 6.0.5 · 6.2.0 · 6.2.0 beta1 · 6.2.0 beta2 · 6.2.0 beta3 · 6.2.0 beta4 · 6.2.0 rc1 · 6.2.1

Fixed in: newer than 6.0.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 6.0.5 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mapserver

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-2017-5522?

debian linux: mitigate or apply the listed mitigation; mapserver: upgrade to newer than 6.0.5. Exact commands for each OS are on this page.

Is CVE-2017-5522 being exploited?

CVE-2017-5522 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-2017-5522 affect?

CVE-2017-5522 affects debian linux, mapserver. Severity is critical (CVSS 9.8). Stack-based buffer overflow in MapServer before 6.0.6, 6.2.x before 6.2.4, 6.4.x before 6.4.5, and 7.0.x before 7.0.4 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving WFS get featu

How urgent is CVE-2017-5522?

Priority 67/100. Critical severity; EPSS top 8%: very likely to be exploited; Remotely exploitable, no login, no user action; On your watchlist

Software pages

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References

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