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CVE-2018-25009

29
FAUCET Score

CVE-2018-25009 is a critical heap-based buffer overflow vulnerability in the GetLE16() function of libwebp, affecting versions prior to 1.0.1, including Red Hat Enterprise Linux and WebM Project libwebp. With a CVSS score of 9.1, it presents a severe risk due to its network-based attack vector, low attack complexity, and potential for high impact on confidentiality and availability. Despite its criticality, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.1CPE matchmatch criteria
cpe:2.3:a:webmproject:libwebp:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.10%
Probability of exploitation in next 30 days
EPSS Percentile
79.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0210 is in the 69th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

microsoftpatch availablevia msrc
Product: 16967-16820Fixed in: 1.0.3-1
microsoftpatch availablevia msrc
Product: cm1 libwebp 1.0.3-1 on CBL Mariner 1.0Fixed in: 1.0.3-1
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libwebp-0:1.0.0-5.el8
View patch

Vendor Advisories (2)

microsoft2021-May/CVE-2018-25009Critical

A heap-based buffer overflow was found in libwebp in versions before 1.0.1 in GetLE16().

May 11, 2021
redhatCVE-2018-25009Moderate

libwebp: out-of-bounds read in WebPMuxCreateInternal

Aug 2, 2018

References

bugs.chromium.org / p/oss-fuzz/issues/detail
Issue TrackingThird Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
chromium.googlesource.com / webm/libwebp/+/95fd65070662e01cc9170c4444f5c0859a710097
Patch