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CVE-2007-4739

15
FAUCET Score

CVE-2007-4739 describes a signature verification bypass vulnerability in reprepro versions 1.3.0 through 2.2.3, affecting Debian systems. This flaw allows remote attackers to distribute malicious repository updates by signing a Release.gpg file with an unknown key, which reprepro would incorrectly accept as valid during an update. The vulnerability has a CVSS score of 5.0 (medium severity) due to its network-based attack vector and potential for integrity compromise, though it does not impact confidentiality or availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.3.0CPE matchmatch criteria
cpe:2.3:a:debian:reprepro:1.3.0:*:*:*:*:*:*:*
1.3.1CPE matchmatch criteria
cpe:2.3:a:debian:reprepro:1.3.1:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:debian:reprepro:2.0.0:*:*:*:*:*:*:*
2.1.0CPE matchmatch criteria
cpe:2.3:a:debian:reprepro:2.1.0:*:*:*:*:*:*:*
2.2.0CPE matchmatch criteria
cpe:2.3:a:debian:reprepro:2.2.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.52%
Probability of exploitation in next 30 days
EPSS Percentile
71.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0152 is in the 55th percentile among its peer group of 23,705 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

alioth.debian.org / frs/shownotes.php
Patch
bugs.debian.org / cgi-bin/bugreport.cgi
Patch
bugs.debian.org / cgi-bin/bugreport.cgi
osvdb.org / 40172
secunia.com / advisories/26678
PatchVendor Advisory
secunia.com / advisories/27334
debian.org / security/2007/dsa-1394
securityfocus.com / bid/25537