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CVE-2012-6129· NVD / CVE Program· CNA redhat

Stack-based buffer overflow in utp.cpp in libutp, as used in Transmission before 2.74 and possibly other products, allows remote attackers t

Stack-based buffer overflow in utp.cpp in libutp, as used in Transmission before 2.74 and possibly other products, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted "micro transport protocol packets."

HighCVSS 7.5 · v2.0—No exploit Fix available
Published
Apr 2, 2013
Updated
Jun 16, 2026
EPSS
5.1% · 92th percentile
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Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 5.1%

Affected systems

VendorProduct
transmissionbttransmission
canonicalubuntu linux
fedoraprojectfedora

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • canonical ubuntu linux11.10
  • canonical ubuntu linux12.04
  • canonical ubuntu linux12.10
  • fedoraproject fedora16
  • transmissionbt transmissionup to 2.73 inclusive
  • transmissionbt transmission0.1
  • transmissionbt transmission0.2
  • transmissionbt transmission0.3
  • transmissionbt transmission0.4
  • transmissionbt transmission0.5
  • transmissionbt transmission0.6
  • transmissionbt transmission0.6.1
  • transmissionbt transmission0.70
  • transmissionbt transmission0.71
  • transmissionbt transmission0.72
  • transmissionbt transmission0.80
  • transmissionbt transmission0.81
  • transmissionbt transmission0.82
  • transmissionbt transmission0.90
  • transmissionbt transmission0.91

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12transmissionbefore 2.52-3+nmu12.52-3+nmu1

Same product

transmissionbt: all records

Other highest-scoring records for the same primary product.

  • CVE-2010-0748Transmission before 1.92 allows an attacker to cause a denial of service (crash) or possibly have other unspecified impact via a large numbe
    40Plan
  • CVE-2018-5702Transmission through 2.92 relies on X-Transmission-Session-Id (which is not a forbidden header for Fetch) for access control, which allows r
    39Monitor
  • CVE-2010-0012Directory traversal vulnerability in libtransmission/metainfo.c in Transmission 1.22, 1.34, 1.75, and 1.76 allows remote attackers to overwr
    36Monitor
  • CVE-2018-10756Use-after-free in libtransmission/variant.c in Transmission before 3.00 allows remote attackers to cause a denial of service (crash) or poss
    32Monitor
  • CVE-2010-1853Multiple stack-based buffer overflows in the tr_magnetParse function in libtransmission/magnet.c in Transmission 1.91 allow remote attackers
    28Monitor
  • CVE-2009-1757Cross-site request forgery (CSRF) vulnerability in Transmission 1.5 before 1.53 and 1.6 before 1.61 allows remote attackers to hijack the au
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:transmission2.52-3+nmu1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
P · data can be read
Integrity
P · data or configuration can be modified
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
P
Integrity impact
P
Availability impact
P

Weakness class (CWE)

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records