CVE-2012-5961Libupnp Memory Corruption
libupnp: Multiple stack-based buffer overflows in unique_service_name() by processing specially-crafted SSDP request (VU#922681)
Published Jan 29, 2013 · Updated Mar 9, 2026
Key Facts
Patch immediately- CVE-2012-5961 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Libupnp (Libupnp Project), libupnp4 (debian), libupnp6-32bit (suse) and 2 more products.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 37% probability of exploitation in the next 30 days.
- Fixed versions are available, including Libupnp 1:1.6.6-5+squeeze1, libupnp-devel 1.6.19-1.8, libupnp4 1.8.0~svn20100507-1+squeeze1.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
10.0
AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
37%
Higher than 98.5% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
38/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Advisories And Exploit References
- patchVU#922681
Description
Stack-based buffer overflow in the unique_service_name function in ssdp/ssdp_server.c in the SSDP parser in the portable SDK for UPnP Devices (aka libupnp, formerly the Intel SDK for UPnP devices) 1.3.1 allows remote attackers to execute arbitrary code via a long UDN (aka device) field in a UDP packet.
Affected Products
6 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| LibupnpLibupnp Project | 1.3.1 | 1:1.6.6-5+squeeze1 |
| libupnp4debian | See advisory | 1.8.0~svn20100507-1+squeeze1 |
| libupnp6-32bitsuse | See advisory | 1.6.19-1.8 |
| libupnp6suse | See advisory | 1.6.19-1.8 |
| libupnp-develsuse | See advisory | 1.6.19-1.8 |
Patched Releases
Libupnp
1:1.6.6-5+squeeze1
libupnp-devel
1.6.19-1.8
libupnp4
1.8.0~svn20100507-1+squeeze1
libupnp6
1.6.19-1.8
libupnp6-32bit
1.6.19-1.8
Timeline
Publicly disclosed
Jan 29, 2013
Last updated
Mar 9, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-121 Stack-based Buffer Overflow
References
- patchVU#922681
- exploitExploitDB-24455
- exploit57602
- otherpupnp.sourceforge.net · ChangeLog
- othercommunity.rapid7.com · security-flaws-in-universal-plug-and-play-unplu…
FAQ
Common Questions.
Stack-based buffer overflow in the unique_service_name function in ssdp/ssdp_server.c in the SSDP parser in the portable SDK for UPnP Devices (aka libupnp, formerly the Intel SDK for UPnP devices) 1.3.1 allows remote attackers to execute arbitrary code via a long UDN (aka device) field in a UDP packet.
Affected: Libupnp (Libupnp Project) versions 1.3.1; libupnp4 (debian); libupnp6-32bit (suse), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Libupnp 1:1.6.6-5+squeeze1, libupnp-devel 1.6.19-1.8, libupnp4 1.8.0~svn20100507-1+squeeze1.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2012-5961 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
Request A Demo