CVE-2016-9839

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 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-9839 is rated Moderate Risk (55.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.50%). EPSS rose +1.15% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2016-9839

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 2026-06-15 0.36% 1.50% +1.15%
2 2025-03-30 0.66% 0.36% -0.30%
3 2025-03-29 — 0.66% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-9839

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2016-9839

OS Trackers for CVE-2016-9839

vendor priority summary link
debian not yet assigned CVE-2016-9839 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-2016-9839
ubuntu medium CVE-2016-9839 medium priority: Ubuntu including 1 source packages (mapserver), 9 status rows across 9 suites (artful, bionic, cosmic, precise, trusty, upstream, xenial, yakkety, zesty): ignored 4, released 3, not-affected 2. https://ubuntu.com/security/CVE-2016-9839

Affected software / configurations for CVE-2016-9839

Vendor Product Version Raw CPE
osgeo mapserver <= 7.0.2 cpe:2.3:a:osgeo:mapserver:*:*:*:*:*:*:*:*

References for CVE-2016-9839

URL Tags
http://www.securityfocus.com/bid/94856 Broken Link Third Party Advisory VDB Entry
https://github.com/mapserver/mapserver/pull/5356 Vendor Advisory
cvelogic Threat Intelligence