Read the docs
TI-2026-25237 Aliases CVE-2026-32746GHSA-qvfm-56cp-4988

Buffer overflow in GNU inetutils

Priority HIGH 82CWE-120Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

telnetd in GNU inetutils through 2.7 allows an out-of-bounds write in the LINEMODE SLC (Set Local Characters) suboption handler because add_slc does not check whether the buffer is full.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.44829 98th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
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
GNUinetutilsup to 2.7—No fix listedCNA
  • inetutils VendorGNU Affected up to 2.7 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gnu:inetutils:*:*:*:*:*:*:*:*up to 2.7VulnerableGNU
  • cpe:2.3:a:gnu:inetutils:*:*:*:*:*:*:*:* Versions up to 2.7 Vulnerable ·GNU

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-32746
  2. 2026-10-03 Alias added: GHSA-qvfm-56cp-4988
  3. 2026-10-25 EPSS moved to the 95th–99th percentile

References

Exploit 1

Advisory 3

  • TI-2026-19388 telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a "-f root"… KEVCVSS 3.1CRITICAL 9.8
  • TI-2011-04182 Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT… CVSS 2.0HIGH 10.0
  • TI-2026-22648 telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by… CVSS 3.1HIGH 7.8
  • TI-2026-25261 telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment… CVSS 3.1MEDIUM 4.7
  • TI-2022-18420 telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works… CVSS 3.1HIGH 7.5
  • TI-2023-21144 GNU inetutils before 2.5 may allow privilege escalation because of unchecked return… CVSS 3.1HIGH 7.8
See all 7 →

Sources

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