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.
Conclusion & alert: CVE-2017-5522 is rated High Risk (72/100): CVSS Critical severity, with high exploitation likelihood (EPSS 6.04%, 90th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +1.20% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-11-16 | 4.84% | 6.04% | +1.20% |
| 2 | 2025-03-30 | 8.25% | 4.84% | -3.40% |
| 3 | 2025-03-29 | — | 8.25% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.8 | 3.0 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2017-5522 not yet assigned priority: Debian including 1 source packages (mapserver), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2017-5522 |
ubuntu
|
medium | CVE-2017-5522 medium priority: Ubuntu including 1 source packages (mapserver), 9 status rows across 9 suites (artful, bionic, cosmic, precise, trusty, upstream, xenial, yakkety, zesty): not-affected 4, released 3, ignored 2. | https://ubuntu.com/security/CVE-2017-5522 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| osgeo | mapserver | <= 6.0.5 | cpe:2.3:a:osgeo:mapserver:*:*:*:*:*:*:*:* |
| osgeo | mapserver | 6.2.0 | cpe:2.3:a:osgeo:mapserver:6.2.0:*:*:*:*:*:*:* |
| osgeo | mapserver | 6.2.0 | cpe:2.3:a:osgeo:mapserver:6.2.0:beta1:*:*:*:*:*:* |
| osgeo | mapserver | 6.2.0 | cpe:2.3:a:osgeo:mapserver:6.2.0:beta2:*:*:*:*:*:* |
| osgeo | mapserver | 6.2.0 | cpe:2.3:a:osgeo:mapserver:6.2.0:beta3:*:*:*:*:*:* |
| osgeo | mapserver | 6.2.0 | cpe:2.3:a:osgeo:mapserver:6.2.0:beta4:*:*:*:*:*:* |
| osgeo | mapserver | 6.2.0 | cpe:2.3:a:osgeo:mapserver:6.2.0:rc1:*:*:*:*:*:* |
| osgeo | mapserver | 6.2.1 | cpe:2.3:a:osgeo:mapserver:6.2.1:*:*:*:*:*:*:* |
| osgeo | mapserver | 6.2.2 | cpe:2.3:a:osgeo:mapserver:6.2.2:*:*:*:*:*:*:* |
| osgeo | mapserver | 6.2.3 | cpe:2.3:a:osgeo:mapserver:6.2.3:*:*:*:*:*:*:* |
| osgeo | mapserver | 6.4.0 | cpe:2.3:a:osgeo:mapserver:6.4.0:*:*:*:*:*:*:* |
| osgeo | mapserver | 6.4.0 | cpe:2.3:a:osgeo:mapserver:6.4.0:beta1:*:*:*:*:*:* |
| osgeo | mapserver | 6.4.0 | cpe:2.3:a:osgeo:mapserver:6.4.0:beta2:*:*:*:*:*:* |
| osgeo | mapserver | 6.4.0 | cpe:2.3:a:osgeo:mapserver:6.4.0:rc1:*:*:*:*:*:* |
| osgeo | mapserver | 6.4.1 | cpe:2.3:a:osgeo:mapserver:6.4.1:*:*:*:*:*:*:* |
| osgeo | mapserver | 6.4.2 | cpe:2.3:a:osgeo:mapserver:6.4.2:*:*:*:*:*:*:* |
| osgeo | mapserver | 6.4.3 | cpe:2.3:a:osgeo:mapserver:6.4.3:*:*:*:*:*:*:* |
| osgeo | mapserver | 6.4.4 | cpe:2.3:a:osgeo:mapserver:6.4.4:*:*:*:*:*:*:* |
| osgeo | mapserver | 7.0.0 | cpe:2.3:a:osgeo:mapserver:7.0.0:*:*:*:*:*:*:* |
| osgeo | mapserver | 7.0.0 | cpe:2.3:a:osgeo:mapserver:7.0.0:beta1:*:*:*:*:*:* |
| osgeo | mapserver | 7.0.0 | cpe:2.3:a:osgeo:mapserver:7.0.0:beta2:*:*:*:*:*:* |
| osgeo | mapserver | 7.0.1 | cpe:2.3:a:osgeo:mapserver:7.0.1:*:*:*:*:*:*:* |
| osgeo | mapserver | 7.0.2 | cpe:2.3:a:osgeo:mapserver:7.0.2:*:*:*:*:*:*:* |
| osgeo | mapserver | 7.0.3 | cpe:2.3:a:osgeo:mapserver:7.0.3:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.debian.org/security/2017/dsa-3766 | Third Party Advisory |
| http://www.mapserver.org/development/changelog/changelog-6-0-6.html#changelog-6-0-6 | Release Notes |
| http://www.mapserver.org/development/changelog/changelog-6-2-4.html#changelog-6-2-4 | Release Notes |
| http://www.mapserver.org/development/changelog/changelog-6-4.html#changelog-6-4-5 | Release Notes |
| http://www.mapserver.org/development/changelog/changelog-7-0.html#changelog-7-0-4 | Release Notes |
| https://github.com/mapserver/mapserver/commit/e52a436c0e1c5e9f7ef13428dba83194a800f4df | Patch Third Party Advisory |
| https://lists.osgeo.org/pipermail/mapserver-dev/2017-January/015007.html | Mailing List Third Party Advisory |