Description
The snmp_pdu_parse function in snmp_api.c in net-snmp 5.7.2 and earlier does not remove the varBind variable in a netsnmp_variable_list item when parsing of the SNMP PDU fails, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted packet.
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-1.1 | — |
| Debian 13 | net-snmp | 5.7.3+dfsg-1.1 | — |
| Debian 12 | net-snmp | 5.7.3+dfsg-1.1 | — |
| Debian 8 | net-snmp | 5.7.2.1+dfsg-1+deb8u1 | DSA-4154-1 |
| Debian 7 | net-snmp | 5.4.3~dfsg-2.8+deb7u2 | DLA-1317-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | net-snmp | 5.7.2~dfsg-8.1ubuntu3.1 | USN-2711-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | net-snmp +8 | 1:5.7.2-20.ael7b_1.1 | RHSA-2015:1636 |
| RHEL 6 | net-snmp +5 | 1:5.5-54.el6_7.1 | RHSA-2015:1636 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | net-snmp | 5.7.2.1-4.3.2 | SUSE-SU-2015:1556-1 |
| SLES 11 SP4 | net-snmp | 5.4.2.1-8.12.24.1 | SUSE-SU-2015:1524-1 |
| SLES 11 SP3 | net-snmp | 5.4.2.1-8.12.24.1 | SUSE-SU-2015:1524-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | net-snmp | 5.7.2.1-4.3.2 | SUSE-SU-2015:1556-1 |
| SLES for SAP 11 SP4 | net-snmp | 5.4.2.1-8.12.24.1 | SUSE-SU-2015:1524-1 |
| SLES for SAP 11 SP3 | net-snmp | 5.4.2.1-8.12.24.1 | SUSE-SU-2015:1524-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | net-snmp | 5.7.3-8.4 | openSUSE-SU-2024:10204-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | net-snmp +8 | 1:5.7.2-20.el7_1.1 | ELSA-2015-1636 |
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 12
- RHSA-2015:1636 Red Hat Security Advisory: net-snmp security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-2711-1 net-snmp vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- ICSA-26-111-10 Silex Technology SD-330AC and AMC Manager CISA ICS & IT advisories · Apr 21, 2026
- DSA-4154-1 net-snmp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1317-1 net-snmp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2015:1524-1 Security update for net-snmp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1556-1 Security update for net-snmp SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10204-1 libsnmp30-32bit-5.7.3-8.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- ICSA-20-042-02 Siemens Industrial Products SNMP (Update F) CISA ICS & IT advisories · May 6, 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
- ELSA-2015-1636 Moderate: net-snmp security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 17, 2015
References
- openSUSE-SU-2015:1502 vendor-advisory
- 45547 exploit
- http://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791/
- RHSA-2015:1636 vendor-advisory
- 1033304 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1212408
- USN-2711-1 vendor-advisory
- [oss-security] 20150416 Re: net-snmp snmp_pdu_parse() function incompletely initializaition vulnerability mailing-list
- [oss-security] 20150413 net-snmp snmp_pdu_parse() function incompletely initializaition vulnerability mailing-list
- http://support.citrix.com/article/CTX209443
- DSA-4154 vendor-advisory
- [oss-security] 20150731 Re: net-snmp snmp_pdu_parse() function incompletely initializaition vulnerability mailing-list
- https://sourceforge.net/p/net-snmp/bugs/2615/
- 76380 vdb-entry
- https://cert-portal.siemens.com/productcert/pdf/ssa-978220.pdf