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Fencer Vulns
high 7.5

CVE-2016-9839 json

In MapServer before 7.0.3, OGR driver error messages are too verbose and may leak sensitive information if data connection fails.

published 2016-12-08 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-10639

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

In MapServer before 7.0.3, OGR driver error messages are too verbose and may leak sensitive information if data connection fails.

Patch / fix

  • mapserver Debian 14, Debian 13, Debian 12 7.0.3-1

debian advisories DEBIAN-CVE-2016-9839

  • mapserver Ubuntu 14.04 LTS 6.4.1-2ubuntu0.1
  • mapserver Ubuntu 16.04 LTS 7.0.0-9ubuntu3.1

ubuntu advisories UBUNTU-CVE-2016-9839

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-9839 updated cvss 4.3

mapserver: Too verbose messages from OGR driver

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.50% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.