CVE-2007-6277

Multiple buffer overflows in Free Lossless Audio Codec (FLAC) libFLAC before 1.2.1 allow user-assisted remote attackers to execute arbitrary code via large (1) Metadata Block Size, (2) VORBIS Comment String Size, (3) Picture Metadata MIME-TYPE Size, (4) Picture Description Size, (5) Picture Data Length, (6) Padding Length, and (7) PICTURE Metadata width and height values in a .FLAC file, which result in a heap-based overflow; and large (8) VORBIS Comment String Size Length, (9) Picture MIME-Type, (10) Picture MIME-Type URL, and (11) Picture Description Length values in a .FLAC file, which result in a stack-based overflow. NOTE: some of these issues may overlap CVE-2007-4619.

Published: 2007-12-07 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2007-6277 is rated Moderate Risk (64.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 6.74%, 93th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize 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-2007-6277

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 2026-06-15 18.12% 6.74% -11.37%
2 2025-08-07 20.34% 18.12% -2.23%
3 2025-03-30 — 20.34% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-6277

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2007-6277

OS Trackers for CVE-2007-6277

vendor priority summary link
debian not yet assigned CVE-2007-6277 not yet assigned priority: Debian including 1 source packages (flac), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2007-6277
redhat medium — https://access.redhat.com/security/cve/CVE-2007-6277
ubuntu medium CVE-2007-6277 medium priority: Ubuntu including 1 source packages (flac), 5 status rows across 5 suites (dapper, edgy, feisty, gutsy, upstream): released 5. https://ubuntu.com/security/CVE-2007-6277

Affected software / configurations for CVE-2007-6277

Vendor Product Version Raw CPE
flac libflac <= 1.2 cpe:2.3:a:flac:libflac:*:*:*:*:*:*:*:*

References for CVE-2007-6277

cvelogic Threat Intelligence