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CVE-2017-7863

30
FAUCET Score

CVE-2017-7863 is a critical heap-based buffer overflow vulnerability in FFmpeg versions prior to 2017-02-04, specifically within the decode_frame_common function in libavcodec/pngdec.c, affecting various Debian and FFmpeg distributions. With a CVSS score of 9.8, this vulnerability allows for remote, unauthenticated attacks with low complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), and it is not listed on the KEV catalog. Furthermore, there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.8.10CPE matchmatch criteria
cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.56%
Probability of exploitation in next 30 days
EPSS Percentile
83.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0256 is in the 74th percentile among its peer group of 36,897 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 (1)

github_advisorypatch availablevia nvd_reference
View patch

References

bugs.chromium.org / p/oss-fuzz/issues/detail
Third Party AdvisoryVDB Entry
github.com / FFmpeg/FFmpeg/commit/e477f09d0b3619f3d29173b2cd593e17e2d1978e
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2019/02/msg00005.html
Third Party Advisory
securityfocus.com / bid/97675
Third Party AdvisoryVDB Entry