CVE-2014-4909

Exp

Integer overflow in the tr_bitfieldEnsureNthBitAlloced function in bitfield.c in Transmission before 2.84 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted peer message, which triggers an out-of-bounds write.

Published: 2014-07-29 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-4909 is rated High Exploit Risk (70.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 5.41%, 92th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2014-4909

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2014-4909

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 9.19% 5.41% -3.78%
2 2025-03-30 19.41% 9.19% -10.22%
3 2025-03-29 — 19.41% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-4909

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P 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:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2014-4909

OS Trackers for CVE-2014-4909

vendor priority summary link
debian not yet assigned CVE-2014-4909 not yet assigned priority: Debian including 1 source packages (transmission), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2014-4909
ubuntu medium CVE-2014-4909 medium priority: Ubuntu including 1 source packages (transmission), 5 status rows across 5 suites (lucid, precise, saucy, trusty, upstream): released 4, ignored 1. https://ubuntu.com/security/CVE-2014-4909

Affected software / configurations for CVE-2014-4909

Vendor Product Version Raw CPE
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:-:lts:*:*:*:*:*
canonical ubuntu_linux 13.10 cpe:2.3:o:canonical:ubuntu_linux:13.10:*:*:*:*:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
fedoraproject fedora 20 cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
gentoo linux — cpe:2.3:o:gentoo:linux:*:*:*:*:*:*:*:*
transmissionbt transmission <= 2.83 cpe:2.3:a:transmissionbt:transmission:*:*:*:*:*:*:*:*
transmissionbt transmission 0.1 cpe:2.3:a:transmissionbt:transmission:0.1:*:*:*:*:*:*:*
transmissionbt transmission 0.2 cpe:2.3:a:transmissionbt:transmission:0.2:*:*:*:*:*:*:*
transmissionbt transmission 0.3 cpe:2.3:a:transmissionbt:transmission:0.3:*:*:*:*:*:*:*
transmissionbt transmission 0.4 cpe:2.3:a:transmissionbt:transmission:0.4:*:*:*:*:*:*:*
transmissionbt transmission 0.5 cpe:2.3:a:transmissionbt:transmission:0.5:*:*:*:*:*:*:*
transmissionbt transmission 0.6 cpe:2.3:a:transmissionbt:transmission:0.6:*:*:*:*:*:*:*
transmissionbt transmission 0.6.1 cpe:2.3:a:transmissionbt:transmission:0.6.1:*:*:*:*:*:*:*
transmissionbt transmission 0.70 cpe:2.3:a:transmissionbt:transmission:0.70:*:*:*:*:*:*:*
transmissionbt transmission 0.71 cpe:2.3:a:transmissionbt:transmission:0.71:*:*:*:*:*:*:*
transmissionbt transmission 0.72 cpe:2.3:a:transmissionbt:transmission:0.72:*:*:*:*:*:*:*
transmissionbt transmission 0.80 cpe:2.3:a:transmissionbt:transmission:0.80:*:*:*:*:*:*:*
transmissionbt transmission 0.81 cpe:2.3:a:transmissionbt:transmission:0.81:*:*:*:*:*:*:*
transmissionbt transmission 0.82 cpe:2.3:a:transmissionbt:transmission:0.82:*:*:*:*:*:*:*
transmissionbt transmission 0.90 cpe:2.3:a:transmissionbt:transmission:0.90:*:*:*:*:*:*:*
transmissionbt transmission 0.91 cpe:2.3:a:transmissionbt:transmission:0.91:*:*:*:*:*:*:*
transmissionbt transmission 0.92 cpe:2.3:a:transmissionbt:transmission:0.92:*:*:*:*:*:*:*
transmissionbt transmission 0.93 cpe:2.3:a:transmissionbt:transmission:0.93:*:*:*:*:*:*:*
transmissionbt transmission 0.94 cpe:2.3:a:transmissionbt:transmission:0.94:*:*:*:*:*:*:*
transmissionbt transmission 0.95 cpe:2.3:a:transmissionbt:transmission:0.95:*:*:*:*:*:*:*
transmissionbt transmission 0.96 cpe:2.3:a:transmissionbt:transmission:0.96:*:*:*:*:*:*:*
transmissionbt transmission 1.00 cpe:2.3:a:transmissionbt:transmission:1.00:*:*:*:*:*:*:*
transmissionbt transmission 1.01 cpe:2.3:a:transmissionbt:transmission:1.01:*:*:*:*:*:*:*
transmissionbt transmission 1.02 cpe:2.3:a:transmissionbt:transmission:1.02:*:*:*:*:*:*:*
transmissionbt transmission 1.2 cpe:2.3:a:transmissionbt:transmission:1.2:*:*:*:*:*:*:*
transmissionbt transmission 1.03 cpe:2.3:a:transmissionbt:transmission:1.03:*:*:*:*:*:*:*
transmissionbt transmission 1.04 cpe:2.3:a:transmissionbt:transmission:1.04:*:*:*:*:*:*:*
transmissionbt transmission 1.05 cpe:2.3:a:transmissionbt:transmission:1.05:*:*:*:*:*:*:*
transmissionbt transmission 1.06 cpe:2.3:a:transmissionbt:transmission:1.06:*:*:*:*:*:*:*
transmissionbt transmission 1.10 cpe:2.3:a:transmissionbt:transmission:1.10:*:*:*:*:*:*:*
transmissionbt transmission 1.11 cpe:2.3:a:transmissionbt:transmission:1.11:*:*:*:*:*:*:*
transmissionbt transmission 1.20 cpe:2.3:a:transmissionbt:transmission:1.20:*:*:*:*:*:*:*
transmissionbt transmission 1.21 cpe:2.3:a:transmissionbt:transmission:1.21:*:*:*:*:*:*:*
transmissionbt transmission 1.22 cpe:2.3:a:transmissionbt:transmission:1.22:*:*:*:*:*:*:*
transmissionbt transmission 1.30 cpe:2.3:a:transmissionbt:transmission:1.30:*:*:*:*:*:*:*
transmissionbt transmission 1.31 cpe:2.3:a:transmissionbt:transmission:1.31:*:*:*:*:*:*:*
transmissionbt transmission 1.32 cpe:2.3:a:transmissionbt:transmission:1.32:*:*:*:*:*:*:*
transmissionbt transmission 1.33 cpe:2.3:a:transmissionbt:transmission:1.33:*:*:*:*:*:*:*
transmissionbt transmission 1.34 cpe:2.3:a:transmissionbt:transmission:1.34:*:*:*:*:*:*:*
transmissionbt transmission 1.40 cpe:2.3:a:transmissionbt:transmission:1.40:*:*:*:*:*:*:*
transmissionbt transmission 1.41 cpe:2.3:a:transmissionbt:transmission:1.41:*:*:*:*:*:*:*
transmissionbt transmission 1.42 cpe:2.3:a:transmissionbt:transmission:1.42:*:*:*:*:*:*:*
transmissionbt transmission 1.50 cpe:2.3:a:transmissionbt:transmission:1.50:*:*:*:*:*:*:*
transmissionbt transmission 1.51 cpe:2.3:a:transmissionbt:transmission:1.51:*:*:*:*:*:*:*
transmissionbt transmission 1.52 cpe:2.3:a:transmissionbt:transmission:1.52:*:*:*:*:*:*:*
transmissionbt transmission 1.53 cpe:2.3:a:transmissionbt:transmission:1.53:*:*:*:*:*:*:*
transmissionbt transmission 1.54 cpe:2.3:a:transmissionbt:transmission:1.54:*:*:*:*:*:*:*
transmissionbt transmission 1.60 cpe:2.3:a:transmissionbt:transmission:1.60:*:*:*:*:*:*:*
transmissionbt transmission 1.61 cpe:2.3:a:transmissionbt:transmission:1.61:*:*:*:*:*:*:*
transmissionbt transmission 1.70 cpe:2.3:a:transmissionbt:transmission:1.70:*:*:*:*:*:*:*
transmissionbt transmission 1.71 cpe:2.3:a:transmissionbt:transmission:1.71:*:*:*:*:*:*:*
transmissionbt transmission 1.72 cpe:2.3:a:transmissionbt:transmission:1.72:*:*:*:*:*:*:*
transmissionbt transmission 1.73 cpe:2.3:a:transmissionbt:transmission:1.73:*:*:*:*:*:*:*
transmissionbt transmission 1.74 cpe:2.3:a:transmissionbt:transmission:1.74:*:*:*:*:*:*:*
transmissionbt transmission 1.75 cpe:2.3:a:transmissionbt:transmission:1.75:*:*:*:*:*:*:*
transmissionbt transmission 1.76 cpe:2.3:a:transmissionbt:transmission:1.76:*:*:*:*:*:*:*
transmissionbt transmission 1.77 cpe:2.3:a:transmissionbt:transmission:1.77:*:*:*:*:*:*:*
transmissionbt transmission 1.80 cpe:2.3:a:transmissionbt:transmission:1.80:*:*:*:*:*:*:*
transmissionbt transmission 1.81 cpe:2.3:a:transmissionbt:transmission:1.81:*:*:*:*:*:*:*
transmissionbt transmission 1.82 cpe:2.3:a:transmissionbt:transmission:1.82:*:*:*:*:*:*:*
transmissionbt transmission 1.83 cpe:2.3:a:transmissionbt:transmission:1.83:*:*:*:*:*:*:*
transmissionbt transmission 1.90 cpe:2.3:a:transmissionbt:transmission:1.90:*:*:*:*:*:*:*
transmissionbt transmission 1.91 cpe:2.3:a:transmissionbt:transmission:1.91:*:*:*:*:*:*:*
transmissionbt transmission 1.92 cpe:2.3:a:transmissionbt:transmission:1.92:*:*:*:*:*:*:*
transmissionbt transmission 1.93 cpe:2.3:a:transmissionbt:transmission:1.93:*:*:*:*:*:*:*
transmissionbt transmission 2.00 cpe:2.3:a:transmissionbt:transmission:2.00:*:*:*:*:*:*:*
transmissionbt transmission 2.01 cpe:2.3:a:transmissionbt:transmission:2.01:*:*:*:*:*:*:*
transmissionbt transmission 2.02 cpe:2.3:a:transmissionbt:transmission:2.02:*:*:*:*:*:*:*
transmissionbt transmission 2.03 cpe:2.3:a:transmissionbt:transmission:2.03:*:*:*:*:*:*:*
transmissionbt transmission 2.04 cpe:2.3:a:transmissionbt:transmission:2.04:*:*:*:*:*:*:*
transmissionbt transmission 2.10 cpe:2.3:a:transmissionbt:transmission:2.10:*:*:*:*:*:*:*
transmissionbt transmission 2.11 cpe:2.3:a:transmissionbt:transmission:2.11:*:*:*:*:*:*:*
transmissionbt transmission 2.12 cpe:2.3:a:transmissionbt:transmission:2.12:*:*:*:*:*:*:*
transmissionbt transmission 2.13 cpe:2.3:a:transmissionbt:transmission:2.13:*:*:*:*:*:*:*
transmissionbt transmission 2.20 cpe:2.3:a:transmissionbt:transmission:2.20:*:*:*:*:*:*:*

References for CVE-2014-4909

cvelogic Threat Intelligence