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CVE-2017-12800

23
FAUCET Score

CVE-2017-12800 describes a denial-of-service vulnerability in the libebml2 library, affecting Matroska tools like mkclean and mkvalidator. An attacker can trigger a null pointer dereference and application crash by providing a specially crafted MKV file. Rated Medium severity (CVSS 6.5), this vulnerability requires user interaction (UI:R) to open the malicious file, but has low attack complexity (AC:L) over a network (AV:N). There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2012-08-26CPE matchmatch criteria
cpe:2.3:a:matroska:libebml2:*:*:*:*:*:*:*:*
0.8.9CPE matchmatch criteria
cpe:2.3:a:matroska:mkclean:0.8.9:*:*:*:*:*:*:*
0.5.1CPE matchmatch criteria
cpe:2.3:a:matroska:mkvalidator:0.5.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.42%
Probability of exploitation in next 30 days
EPSS Percentile
82.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0242 is in the 92nd percentile among its peer group of 26,219 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/144902/mkvalidator-0.5.1-Denial-Of-Service.html
Third Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2017/Nov/19
ExploitMailing ListThird Party Advisory
github.com / Matroska-Org/foundation-source/issues/24
ExploitThird Party Advisory