Description
_set_key in agent/helpers/table_container.c in Net-SNMP before 5.8 has a NULL Pointer Exception bug that can be used by an authenticated attacker to remotely cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | net-snmp | 5.7.3+dfsg-4 | — |
| Debian 13 | net-snmp | 5.7.3+dfsg-4 | — |
| Debian 12 | net-snmp | 5.7.3+dfsg-4 | — |
| Debian 9 | net-snmp | 5.7.3+dfsg-1.7+deb9u1 | DSA-4314-1 |
| Debian 8 | net-snmp | 5.7.2.1+dfsg-1+deb8u2 | DLA-1540-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | net-snmp | 5.7.3+dfsg-1.8ubuntu3.1 | USN-3792-1 |
| Ubuntu 16.04 LTS | net-snmp | 5.7.3+dfsg-1ubuntu4.2 | USN-3792-1 |
| Ubuntu 14.04 LTS | net-snmp | 5.7.2~dfsg-8.1ubuntu3.3 | USN-3792-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | net-snmp | 5.7.3-10.9.1 | SUSE-SU-2022:0050-1 |
| SLES 15 SP2 | net-snmp | 5.7.3-10.9.1 | SUSE-SU-2022:0050-2 |
| SLES 15 SP1 | net-snmp | 5.7.3-10.9.1 | SUSE-SU-2022:0050-1 |
| SLES 15 | net-snmp | 5.7.3-7.3.1 | SUSE-SU-2018:3333-1 |
| SLES 12 SP3 | net-snmp | 5.7.3-6.3.1 | SUSE-SU-2018:3447-1 |
Show 18 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | net-snmp | 5.7.3-6.3.1 | SUSE-SU-2018:3447-1 |
| SLES 12 SP1 | net-snmp | 5.7.3-6.3.1 | SUSE-SU-2018:3447-1 |
| SLES 12 | net-snmp | 5.7.2.1-4.9.1 | SUSE-SU-2018:3319-1 |
| SLES for SAP 15 SP2 | net-snmp | 5.7.3-10.9.1 | SUSE-SU-2022:0050-2 |
| SLES for SAP 15 SP1 | net-snmp | 5.7.3-10.9.1 | SUSE-SU-2022:0050-1 |
| SLES for SAP 12 SP3 | net-snmp | 5.7.3-6.3.1 | SUSE-SU-2018:3447-1 |
| SLES for SAP 12 SP2 | net-snmp | 5.7.3-6.3.1 | SUSE-SU-2018:3447-1 |
| SLES for SAP 12 SP1 | net-snmp | 5.7.3-6.3.1 | SUSE-SU-2018:3447-2 |
| SLE Real Time 15 SP2 | net-snmp | 5.7.3-10.9.1 | SUSE-SU-2022:0050-2 |
| SLE HPC 15 SP2 | net-snmp | 5.7.3-10.9.1 | SUSE-SU-2022:0050-2 |
| SLE HPC 15 SP1 | net-snmp | 5.7.3-10.9.1 | SUSE-SU-2022:0050-1 |
| SUSE OpenStack Cloud 7 | net-snmp | 5.7.3-6.3.1 | SUSE-SU-2018:3447-1 |
| SUSE Manager Server 4.1 | net-snmp | 5.7.3-10.9.1 | SUSE-SU-2022:0050-2 |
| SUSE Manager Retail Branch Server 4.1 | net-snmp | 5.7.3-10.9.1 | SUSE-SU-2022:0050-2 |
| SUSE Manager Proxy 4.1 | net-snmp | 5.7.3-10.9.1 | SUSE-SU-2022:0050-2 |
| SUSE Enterprise Storage 7 | net-snmp | 5.7.3-10.9.1 | SUSE-SU-2022:0050-2 |
| SUSE Enterprise Storage 6 | net-snmp | 5.7.3-10.9.1 | SUSE-SU-2022:0050-1 |
| SUSE Enterprise Storage 4 | net-snmp | 5.7.3-6.3.1 | SUSE-SU-2018:3447-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | net-snmp | 5.9-3.2 | openSUSE-SU-2024:11082-1 |
| openSUSE Leap 15.3 | net-snmp | 5.7.3-10.9.1 | openSUSE-SU-2022:0050-1 |
| openSUSE Leap 15.3 | opera | 84.0.4316.14-lp153.2.36.1 | openSUSE-SU-2022:0050-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- net-snmp 5.7.3 - (Authenticated) Denial of Service (PoC) EDB-45547 · dos · Oct 8, 2018
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 15
- USN-3792-1 net-snmp vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4314-1 net-snmp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1540-1 net-snmp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2022:0050-2 Security update for net-snmp SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:0050-1 Security update for net-snmp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3447-1 Security update for net-snmp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3333-1 Security update for net-snmp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3319-1 Security update for net-snmp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0050-1 Security update for net-snmp SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-1692 Net-SNMP: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jul 31, 2025
- openSUSE-SU-2024:11082-1 libsnmp30-32bit-5.9-3.2 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ICSA-20-042-02 Siemens Industrial Products SNMP (Update F) CISA ICS & IT advisories · May 6, 2025
- SUSE-SU-2018:3447-2 Security update for net-snmp SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2024-1591 Juniper JUNOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2024
- SSA-978220 SSA-978220: Denial of Service Vulnerability over SNMP in Multiple Industrial Products Siemens ProductCERT · Apr 11, 2023
References
- https://sourceforge.net/p/net-snmp/code/ci/7ffb8e25a0db851953155de91f0170e9bf8c457d/
- 45547 exploit
- USN-3792-1 vendor-advisory
- https://dumpco.re/blog/net-snmp-5.7.3-remote-dos
- https://security.netapp.com/advisory/ntap-20181107-0001/
- USN-3792-2 vendor-advisory
- USN-3792-3 vendor-advisory
- DSA-4314 vendor-advisory
- 106265 vdb-entry
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-978220.pdf
- https://security.paloaltonetworks.com/CVE-2018-18065