OSV-2026-1302 Heap-use-after-free in unregister_sysORTable_by_session
A heap-use-after-free vulnerability in the SNMP agent library allows attackers to potentially execute code or cause a denial of service via crafted packets.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2026-1302?
OSV-2026-1302 is an use after free vulnerability in net-snmp, published on 19 Sep 2026.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=563134244
Crash type: Heap-use-after-free READ 8
Crash state:
unregister_sysORTable_by_session
close_agentx_session
handle_master_agentx_packet
Which versions are affected by OSV-2026-1302?
1 open source package ship an affected version, including net-snmp.
| Package | Affected | Fixed in |
|---|---|---|
net-snmp OSS-Fuzz | All versions | None |
How do I fix OSV-2026-1302?
No fix has been published for OSV-2026-1302 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is OSV-2026-1302 being exploited?
There is no known exploitation of OSV-2026-1302 in the wild and no public exploit code.