Skip to content
Fencer Vulns
critical 9.8

CVE-2026-52490 json

An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code via the process_command_opts() fu…

published 2026-08-24 2 mo ago modified 2026-10-12 27 d ago also EUVD-2026-65144

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code via the process_command_opts() function in tools/tiffcrop.c

Patch / fix

  • tiff Debian 14 4.7.2-1

debian advisories DEBIAN-CVE-2026-52490

  • libtiff RHEL 8 4.0.9-39.el8_10
  • libtiff-tools RHEL 8 4.0.9-39.el8_10
  • libtiff hummingbird 1 4.7.2-2.hum1
  • libtiff-tools hummingbird 1 4.7.2-2.hum1

red hat advisories RHSA-2026:69095RHSA-2026:53467

  • libtiff AlmaLinux 8 4.0.9-39.el8_10
  • libtiff-tools AlmaLinux 8 4.0.9-39.el8_10

almalinux advisories ALSA-2026:69095

  • libtiff Rocky Linux 8 4.0.9-39.el8_10

rocky linux advisories RLSA-2026:69095

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-52490 updated cvss 7.3

libtiff: libtiff: Arbitrary code execution via process_command_opts() function

  • Red Hat Enterprise Linux 6 libtiff
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 libtiff, libtiff-tools Red Hat Enterprise Linux 8 mingw-libtiff, mingw32-libtiff, mingw64-libtiff
    affected: workaround, no fix available
  • Red Hat Enterprise Linux AppStream (v. 8) libtiff 4.0.9-39.el8_10 Red Hat Enterprise Linux CRB (v. 8) libtiff-tools 4.0.9-39.el8_10
    fixed: vendor fix RHSA-2026:69095
  • Red Hat Hardened Images libtiff 4.7.2-2.hum1, libtiff-tools 4.7.2-2.hum1
    fixed: vendor fix RHSA-2026:53467
  • Red Hat Enterprise Linux 7 compat-libtiff3 Red Hat Enterprise Linux 8 compat-libtiff3
    not affected: vulnerable code not in execute path
  • Red Hat Enterprise Linux 9 libtiff, libtiff-tools
    not affected: inline mitigations already exist
  • Red Hat Enterprise Linux 10 libtiff
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
2 mo ago

Exploit prediction

0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gitlab.com https://gitlab.com/libtiff/libtiff/-/work_items/846 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.