CVE-2016-10091

Multiple stack-based buffer overflows in unrtf 0.21.9 allow remote attackers to cause a denial-of-service by writing a negative integer to the (1) cmd_expand function, (2) cmd_emboss function, or (3) cmd_engrave function.

Published: 2017-04-21 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-10091 is rated Moderate Risk (57/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.61%). 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-2016-10091

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 2025-03-30 5.16% 2.61% -2.56%
2 2025-03-29 2.61% 5.16% +2.56%
3 2025-03-17 — 2.61% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-10091

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P 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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2016-10091

OS Trackers for CVE-2016-10091

vendor priority summary link
debian not yet assigned CVE-2016-10091 not yet assigned priority: Debian including 1 source packages (unrtf), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2016-10091
ubuntu medium CVE-2016-10091 medium priority: Ubuntu including 1 source packages (unrtf), 10 status rows across 10 suites (artful, bionic, cosmic, disco, precise, trusty, upstream, xenial, yakkety, zesty): not-affected 5, ignored 2, released 2, DNE 1. https://ubuntu.com/security/CVE-2016-10091

Affected software / configurations for CVE-2016-10091

Vendor Product Version Raw CPE
unrtf_project unrtf 0.21.9 cpe:2.3:a:unrtf_project:unrtf:0.21.9:*:*:*:*:*:*:*

References for CVE-2016-10091

URL Tags
http://hg.savannah.gnu.org/hgweb/unrtf/rev/3b16893a6406 Issue Tracking Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/12/31/3 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/01/01/1 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/95173 Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1409546 Issue Tracking Patch
cvelogic Threat Intelligence