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CVE-2025-68615: net-snmp is a SNMP application library, tools and daemon

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CRITICAL 9.8REMOTEWATCHLISTUPGRADEMITIGATE

CVE-2025-68615 is a critical-severity flaw (CVSS 9.8) affecting net-snmp, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

net-snmp is a SNMP application library, tools and daemon. Prior to versions 5.9.5 and 5.10.pre2, a specially crafted packet to an net-snmp snmptrapd daemon can cause a buffer overflow and the daemon to crash. This issue has been patched in versions 5.9.5 and 5.10.pre2.

Why this priority

  • Critical severity
  • EPSS top 1%: very likely to be exploited
  • Public exploit reference
  • CISA SSVC: automatable with total technical impact
  • Remotely exploitable, no login, no user action
  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance42.4% (top 1%)
CISA exploited listNo
WeaknessCWE-119
Published2025-12-23
Last modified2026-10-19
Publisher (CNA): GitHub, Inc. · Vendor: debian · net-snmp

Share: LinkedIn · X · Reddit

Last updated 2026-10-19 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

net-snmp net-snmp UPGRADE
Affected: < 5.9.5 · 5.10 pre1
Fixed in: 5.9.5
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy net-snmp || rpm -q net-snmp || net-snmp --version
2. UPGRADE to 5.9.5 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade net-snmp
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade net-snmp
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
debian debian linux MITIGATE
Affected: 11.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 11.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.
Fedora 46 · amule · FIXED · 3.2.0-1.fc46 · FEDORA-2026-4feb2647b0 · source
sudo dnf upgrade --advisory=FEDORA-2026-4feb2647b0
Fedora ELN · mysql9.7 · FIXED · 9.7.4-3.eln159 · FEDORA-2026-ea1c50e49b · source
sudo dnf upgrade --advisory=FEDORA-2026-ea1c50e49b
Ubuntu 20.04 · net-snmp · FIXED · 5.8+dfsg-2ubuntu2.9+esm2
sudo apt update && sudo apt install --only-upgrade net-snmp dpkg --compare-versions "$(dpkg-query -W -f='${Version}' net-snmp)" ge "5.8+dfsg-2ubuntu2.9+esm2" && echo PATCHED || echo STILL-VULNERABLE
Ubuntu 22.04 · net-snmp · FIXED · 5.9.1+dfsg-1ubuntu2.9
sudo apt update && sudo apt install --only-upgrade net-snmp dpkg --compare-versions "$(dpkg-query -W -f='${Version}' net-snmp)" ge "5.9.1+dfsg-1ubuntu2.9" && echo PATCHED || echo STILL-VULNERABLE
Ubuntu 24.04 · net-snmp · FIXED · 5.9.4+dfsg-1.1ubuntu3.2
sudo apt update && sudo apt install --only-upgrade net-snmp dpkg --compare-versions "$(dpkg-query -W -f='${Version}' net-snmp)" ge "5.9.4+dfsg-1.1ubuntu3.2" && echo PATCHED || echo STILL-VULNERABLE
Ubuntu 25.04 · net-snmp · FIXED · 5.9.4+dfsg-1.1ubuntu7.1
sudo apt update && sudo apt install --only-upgrade net-snmp dpkg --compare-versions "$(dpkg-query -W -f='${Version}' net-snmp)" ge "5.9.4+dfsg-1.1ubuntu7.1" && echo PATCHED || echo STILL-VULNERABLE
Ubuntu 25.10 · net-snmp · FIXED · 5.9.4+dfsg-2ubuntu2.1
sudo apt update && sudo apt install --only-upgrade net-snmp dpkg --compare-versions "$(dpkg-query -W -f='${Version}' net-snmp)" ge "5.9.4+dfsg-2ubuntu2.1" && echo PATCHED || echo STILL-VULNERABLE
Debian 12 · net-snmp · FIXED · 5.9.3+dfsg-2+deb12u1
sudo apt update && sudo apt install --only-upgrade net-snmp dpkg --compare-versions "$(dpkg-query -W -f='${Version}' net-snmp)" ge "5.9.3+dfsg-2+deb12u1" && echo PATCHED || echo STILL-VULNERABLE
Debian 13 · net-snmp · FIXED · 5.9.4+dfsg-2+deb13u1
sudo apt update && sudo apt install --only-upgrade net-snmp dpkg --compare-versions "$(dpkg-query -W -f='${Version}' net-snmp)" ge "5.9.4+dfsg-2+deb13u1" && echo PATCHED || echo STILL-VULNERABLE
RHEL 10 · net-snmp · FIXED · net-snmp-5.9.4-15.el10_1.2
sudo dnf upgrade --advisory=RHSA-2026:0668 rpm -q net-snmp
RHEL 10.0 Extended Update Support · net-snmp · FIXED · net-snmp-5.9.4-15.el10_0.2
sudo dnf upgrade --advisory=RHSA-2026:0810 rpm -q net-snmp
RHEL 7 Extended Lifecycle Support · net-snmp · FIXED · net-snmp-5.7.2-49.el7_9.5
sudo dnf upgrade --advisory=RHSA-2026:0926 rpm -q net-snmp
RHEL 8 · net-snmp · FIXED · net-snmp-5.8-33.el8_10
sudo dnf upgrade --advisory=RHSA-2026:0750 rpm -q net-snmp
RHEL 8.2 Advanced Update Support · net-snmp · FIXED · net-snmp-5.8-14.el8_2.6
sudo dnf upgrade --advisory=RHSA-2026:0850 rpm -q net-snmp
Alpine 3.23 · net-snmp · FIXED · net-snmp-5.9.5.2-r0
apk add --upgrade net-snmp apk info -v net-snmp
Alpine 3.24 · net-snmp · FIXED · net-snmp-5.9.5.2-r0
apk add --upgrade net-snmp apk info -v net-snmp
Amazon Linux 2023 · see advisory · FIXED · ALAS2023-2026-1362 · source
sudo dnf update --advisory=ALAS2023-2026-1362
Amazon Linux 2 · see advisory · FIXED · ALAS2-2026-3124 · source
sudo yum update --advisory=ALAS2-2026-3124

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-68615?

net-snmp: upgrade to 5.9.5; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-68615 being exploited?

CVE-2025-68615 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-68615 affect?

CVE-2025-68615 affects net-snmp, debian linux. Severity is critical (CVSS 9.8). net-snmp is a SNMP application library, tools and daemon. Prior to versions 5.9.5 and 5.10.pre2, a specially crafted packet to an net-snmp snmptrapd daemon can cause a buffer overflow and the daemon to crash. This issue has been patched in

How urgent is CVE-2025-68615?

Priority 77/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Debian vulnerabilities

Related CVEs

References

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