CVE-2016-9969 [High] | Security Vulnerability in Libwebp

CVE-2016-9969 is rated High Exploit Risk (68.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.18%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

EDB-ID	Source	Kind	Published	Link
—	nvd_ref	exploit_tag		Exploit-DB ↗

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Source

Kind

Published

Link

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nvd_ref

exploit_tag

Exploit-DB ↗

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.21%	1.18%	+0.97%
2	2025-10-25	0.33%	0.21%	-0.13%
3	2025-03-30	—	0.33%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.21%

1.18%

+0.97%

2025-10-25

0.33%

0.21%

-0.13%

2025-03-30

—

0.33%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.0	HIGH	`CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/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:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. 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:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.6	5.9	[email protected]
5.1	2.0	MEDIUM	`AV:N/AC:H/Au:N/C:P/I:P/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:H) Exploitation requires uncommon or highly specific conditions. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	4.9	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.5

3.0

HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/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:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
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:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.6

5.9

[email protected]

5.1

2.0

MEDIUM

AV:N/AC:H/Au:N/C:P/I:P/A:P Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:H): Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

4.9

6.4

[email protected]

OS Trackers for CVE-2016-9969

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2016-9969 not yet assigned priority: Debian including 1 source packages (libwebp), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2016-9969
`suse`	high	CVE-2016-9969 severity important: SUSE including 19 source package names (libwebp, libwebp-devel, …), 211 product×package rows across 50 product lines (HPE Helion OpenStack 8, SLES-LTSS-TERADATA 15 SP2, … (50 product lines)): Known Not Affected 207, Fixed 4.	https://www.suse.com/security/cve/CVE-2016-9969/
`ubuntu`	medium	CVE-2016-9969 medium priority: Ubuntu including 9 source packages (firefox, godot, …), 162 status rows across 18 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): not-affected 65, DNE 52, ignored 39, needs-triage 6.	https://ubuntu.com/security/CVE-2016-9969

Affected software / configurations for CVE-2016-9969

Vendor	Product	Version	Raw CPE
webmproject	libwebp	0.5.1	cpe:2.3:a:webmproject:libwebp:0.5.1:::::::*

References for CVE-2016-9969

URL	Tags
https://bugs.chromium.org/p/webp/issues/detail?id=322	Exploit Issue Tracking Third Party Advisory

URL

CVE-2016-9969

Public exploit references (Exploit-DB) for CVE-2016-9969

Exploit prediction scoring system (EPSS) score for CVE-2016-9969

Common vulnerability scoring system (CVSS) metrics for CVE-2016-9969

Weakness enumeration for CVE-2016-9969

OS Trackers for CVE-2016-9969

Affected software / configurations for CVE-2016-9969

References for CVE-2016-9969