CVE-2025-65882: An issue was discovered in openmptcprouter thru 0.64 in file common/package/utils/sys-upgrade-helper/src/tools

Q: How do I fix CVE-2025-65882?

openmptcprouter: upgrade to newer than 0.64. Exact commands for each OS are on this page.

Q: Is CVE-2025-65882 being exploited?

CVE-2025-65882 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-65882 affect?

CVE-2025-65882 affects openmptcprouter. Severity is critical (CVSS 9.8). An issue was discovered in openmptcprouter thru 0.64 in file common/package/utils/sys-upgrade-helper/src/tools/sysupgrade.c in function create_xor_ipad_opad allowing attackers to potentially write arbitrary files or execute arbitrary comman

Q: How urgent is CVE-2025-65882?

Priority 60/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2025-65882 is a critical-severity flaw (CVSS 9.8) affecting openmptcprouter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in openmptcprouter thru 0.64 in file common/package/utils/sys-upgrade-helper/src/tools/sysupgrade.c in function create_xor_ipad_opad allowing attackers to potentially write arbitrary files or execute arbitrary commands.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-78
Published	2025-12-09
Last modified	2026-07-05

Publisher (CNA): MITRE · Vendor: openmptcprouter

Last updated 2026-07-05 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-09 19:15 UTCPublished CVE record published
2026-07-05 02:17 UTCUpdated Record last modified

openmptcprouter openmptcprouter UPGRADE

Affected: <= 0.64

Fixed in: newer than 0.64

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy openmptcprouter || rpm -q openmptcprouter || openmptcprouter --version

2. UPGRADE to newer than 0.64 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openmptcprouter

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openmptcprouter

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora ELN · openjpeg · FIXED · 2.5.4-5.eln159 · FEDORA-2026-1a5f60f401 · source

sudo dnf upgrade --advisory=FEDORA-2026-1a5f60f401

Fedora 46 · trustedqsl · FIXED · 2.8.7-1.fc46 · FEDORA-2026-6b1bc90ebc · source

sudo dnf upgrade --advisory=FEDORA-2026-6b1bc90ebc

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-2025-65882?

openmptcprouter: upgrade to newer than 0.64. Exact commands for each OS are on this page.

Is CVE-2025-65882 being exploited?

CVE-2025-65882 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-2025-65882 affect?

CVE-2025-65882 affects openmptcprouter. Severity is critical (CVSS 9.8). An issue was discovered in openmptcprouter thru 0.64 in file common/package/utils/sys-upgrade-helper/src/tools/sysupgrade.c in function create_xor_ipad_opad allowing attackers to potentially write arbitrary files or execute arbitrary comman

How urgent is CVE-2025-65882?

Priority 60/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

References

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