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TI-2026-50932 Aliases CVE-2026-72694GHSA-pqrp-p4c6-2q4g

Mrtg: mrtg daemon symlink-following chown allows local privilege escalation via pid file path manipulation

Priority LOW 32CWE-59Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 13 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

A flaw was found in MRTG. When the MRTG daemon is started as a root user and subsequently drops privileges, a local, low-privileged attacker can exploit a symbolic link (symlink) following vulnerability. By influencing or pre-placing a symlink in the process ID (PID) file path, the attacker can trick the root process into changing the ownership of an arbitrary existing file to the daemon user. This can lead to local privilege escalation, allowing unauthorized access to or modification of sensitive files.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0014 3rd percentileScored 2026-11-07
Fix Partial Red Hat: 10 advisoriesRed Hat: 13 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat Enterprise Linux 10—2.17.10-12.el10_2.1Patch availableCNA
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support—2.17.10-11.el10_0.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8—2.17.7-1.el8_10.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support—2.17.7-1.el8_4.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On—2.17.7-1.el8_4.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support—2.17.7-1.el8_6.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On—2.17.7-1.el8_6.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service—2.17.7-1.el8_8.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions—2.17.7-1.el8_8.1Patch availableCNA
Red HatRed Hat Enterprise Linux 9—2.17.7-12.el9_8.1Patch availableCNA
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions—2.17.7-10.el9_2.1Patch availableCNA
Red HatRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions—2.17.7-11.el9_4.1Patch availableCNA
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support—2.17.7-11.el9_6.1Patch availableCNA
Red HatRed Hat Enterprise Linux 6——No fix listedCNA
Red HatRed Hat Enterprise Linux 7——No fix listedCNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 2.17.10-12.el10_2.1 Patch available CNA
  • Red Hat Enterprise Linux 10.0 Extended Update Support VendorRed Hat Affected — Fixed in 2.17.10-11.el10_0.1 Patch available CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 2.17.7-1.el8_10.1 Patch available CNA
  • Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 2.17.7-1.el8_4.1 Patch available CNA
  • Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On VendorRed Hat Affected — Fixed in 2.17.7-1.el8_4.1 Patch available CNA
  • Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 2.17.7-1.el8_6.1 Patch available CNA
  • Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On VendorRed Hat Affected — Fixed in 2.17.7-1.el8_6.1 Patch available CNA
  • Red Hat Enterprise Linux 8.8 Telecommunications Update Service VendorRed Hat Affected — Fixed in 2.17.7-1.el8_8.1 Patch available CNA
  • Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.17.7-1.el8_8.1 Patch available CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 2.17.7-12.el9_8.1 Patch available CNA
  • Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.17.7-10.el9_2.1 Patch available CNA
  • Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.17.7-11.el9_4.1 Patch available CNA
  • Red Hat Enterprise Linux 9.6 Extended Update Support VendorRed Hat Affected — Fixed in 2.17.7-11.el9_6.1 Patch available CNA
  • Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA

CPE names CNA · 15

CPEVersionsRoleVendor
cpe:/o:redhat:enterprise_linux:10.210.2—Red Hat
cpe:/o:redhat:enterprise_linux_eus:10.010.0—Red Hat
cpe:/a:redhat:enterprise_linux:8::appstream8—Red Hat
cpe:/a:redhat:rhel_aus:8.4::appstream8.4—Red Hat
cpe:/a:redhat:rhel_eus_long_life:8.4::appstream8.4—Red Hat
cpe:/a:redhat:rhel_aus:8.6::appstream8.6—Red Hat
cpe:/a:redhat:rhel_eus_long_life:8.6::appstream8.6—Red Hat
cpe:/a:redhat:rhel_e4s:8.8::appstream8.8—Red Hat
cpe:/a:redhat:rhel_tus:8.8::appstream8.8—Red Hat
cpe:/a:redhat:enterprise_linux:9::appstream9—Red Hat
  • cpe:/o:redhat:enterprise_linux:10.2 Versions 10.2 — ·Red Hat
  • cpe:/o:redhat:enterprise_linux_eus:10.0 Versions 10.0 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:8::appstream Versions 8 — ·Red Hat
  • cpe:/a:redhat:rhel_aus:8.4::appstream Versions 8.4 — ·Red Hat
  • cpe:/a:redhat:rhel_eus_long_life:8.4::appstream Versions 8.4 — ·Red Hat
  • cpe:/a:redhat:rhel_aus:8.6::appstream Versions 8.6 — ·Red Hat
  • cpe:/a:redhat:rhel_eus_long_life:8.6::appstream Versions 8.6 — ·Red Hat
  • cpe:/a:redhat:rhel_e4s:8.8::appstream Versions 8.8 — ·Red Hat
  • cpe:/a:redhat:rhel_tus:8.8::appstream Versions 8.8 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:9::appstream Versions 9 — ·Red Hat
Show 5 more CPE
CPEVersionsRoleVendor
cpe:/a:redhat:rhel_e4s:9.2::appstream9.2—Red Hat
cpe:/a:redhat:rhel_e4s:9.4::appstream9.4—Red Hat
cpe:/a:redhat:rhel_eus:9.6::appstream9.6—Red Hat
cpe:/o:redhat:rhel_els:66—Red Hat
cpe:/o:redhat:rhel_els:77—Red Hat
  • cpe:/a:redhat:rhel_e4s:9.2::appstream Versions 9.2 — ·Red Hat
  • cpe:/a:redhat:rhel_e4s:9.4::appstream Versions 9.4 — ·Red Hat
  • cpe:/a:redhat:rhel_eus:9.6::appstream Versions 9.6 — ·Red Hat
  • cpe:/o:redhat:rhel_els:6 Versions 6 — ·Red Hat
  • cpe:/o:redhat:rhel_els:7 Versions 7 — ·Red Hat

Remediation

Red Hat 10 advisories

  • RHSA-2026:92071 Released 2026-10-28 · Red Hat rating Important
    mrtg security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) mrtg-2.17.7-10.el9_2.1
  • RHSA-2026:92051 Released 2026-10-28 · Red Hat rating Important
    mrtg security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) mrtg-2.17.7-11.el9_4.1
  • RHSA-2026:91843 Released 2026-10-28 · Red Hat rating Important
    mrtg security update
    • Red Hat Enterprise Linux AppStream E4S (v.8.8) mrtg-2.17.7-1.el8_8.1
    • Red Hat Enterprise Linux AppStream TUS (v.8.8) mrtg-2.17.7-1.el8_8.1
Show 7 more Red Hat advisories
  • RHSA-2026:91844 Released 2026-10-28 · Red Hat rating Important
    mrtg security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) mrtg-2.17.7-1.el8_6.1
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) mrtg-2.17.7-1.el8_6.1
  • RHSA-2026:91845 Released 2026-10-28 · Red Hat rating Important
    mrtg security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) mrtg-2.17.7-1.el8_4.1
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) mrtg-2.17.7-1.el8_4.1
  • RHSA-2026:91644 Released 2026-10-28 · Red Hat rating Important
    mrtg security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) mrtg-2.17.7-11.el9_6.1
  • RHSA-2026:87255 Released 2026-10-21 · Red Hat rating Important
    mrtg security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) mrtg-2.17.10-11.el10_0.1, mrtg-selinux-2.17.10-11.el10_0.1
  • RHSA-2026:65832 Released 2026-09-09 · Red Hat rating Important
    mrtg security update
    • Red Hat Enterprise Linux AppStream (v. 8) mrtg-2.17.7-1.el8_10.1
  • RHSA-2026:57600 Released 2026-08-20 · Red Hat rating Important
    mrtg security update
    • Red Hat Enterprise Linux AppStream (v. 9) mrtg-2.17.7-12.el9_8.1
  • RHSA-2026:57596 Released 2026-08-20 · Red Hat rating Important
    mrtg security update
    • Red Hat Enterprise Linux AppStream (v. 10) mrtg-2.17.10-12.el10_2.1, mrtg-selinux-2.17.10-12.el10_2.1

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:57596
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:65832
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:57600
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2026:91845
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2026:91844
Red Hat Enterprise Linux AppStream E4S (v.8.8)Fixed RHSA-2026:91843
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:92071
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:92051
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:87255
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:91644
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)Fixed RHSA-2026:91845
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)Fixed RHSA-2026:91844
Red Hat Enterprise Linux AppStream TUS (v.8.8)Fixed RHSA-2026:91843

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-72694
  2. 2026-10-03 Alias added: GHSA-pqrp-p4c6-2q4g
  3. 2026-10-21 Fix available: mrtg@0:2.17.10-11.el10_0.1 · CNA
  4. 2026-10-21 1 new reference · CNA
  5. 2026-10-21 Fix available: RHSA-2026:87255 · Red Hat
  6. 2026-10-22 Fix available: Red Hat Enterprise Linux AppStream EUS (v. 10.0) · Red Hat
  7. 2026-10-28 Fix available: mrtg@0:2.17.7-11.el9_6.1 · CNA
  8. 2026-10-28 1 new reference · CNA
  9. 2026-10-28 Fix available: mrtg@0:2.17.7-1.el8_6.1, mrtg@0:2.17.7-11.el9_4.1 · CNA
  10. 2026-10-28 2 new references · CNA
  11. 2026-10-29 Fix available: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux AppStream EUS (v.9.6) +1 · Red Hat
  12. 2026-10-29 Fix available: RHSA-2026:91644 · Red Hat
  13. 2026-10-29 Fix available: RHSA-2026:91844 · Red Hat
  14. 2026-10-29 Fix available: RHSA-2026:92051 · Red Hat
  15. 2026-10-30 Fix available: mrtg@0:2.17.7-1.el8_4.1, mrtg@0:2.17.7-1.el8_8.1, mrtg@0:2.17.7-10.el9_2.1 · CNA
  16. 2026-10-30 3 new references · CNA
  17. 2026-10-30 Fix available: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream E4S (v.9.2) +2 · Red Hat
  18. 2026-11-06 Fix available: RHSA-2026:91845 · Red Hat
  19. 2026-11-06 Fix available: RHSA-2026:92071 · Red Hat
  20. 2026-11-06 Fix available: RHSA-2026:91843 · Red Hat

References

Advisory 10

Other 2

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences