CVE-2026-93312

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.40% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 34.3% of scored records. A rank, not a probability.

NVD base score

2.1 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-09-22.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-18 00:45Z1 MO AGO

Last updated

2026-09-22 18:23Z1 MO AGO

Reserved

2026-09-17

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-404Improper Resource Shutdown or ReleaseClass
• CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

d1fae8e487c670485229e30ca1141f94017edad9ed02678216fd9a3b9174105d

• vuldb.comVDB-406610 | Freedesktop Poppler JBIG2Stream.cc rewind null pointer dereferencehttps://vuldb.com/vuln/406610vdb-entrytechnical-description
• vuldb.comVDB-406610 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/406610/ctisignaturepermissions-required
• vuldb.comCVE-2026-93312 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-93312third-party-advisory
• vuldb.comSubmit #942345 | freedesktop.org Poppler 26.07.0 NULL Pointer Dereferencehttps://vuldb.com/submit/942345third-party-advisory
• gitlab.freedesktop.orghttps://gitlab.freedesktop.org/poppler/poppler/-/work_items/1759related
• gitlab.freedesktop.orghttps://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/2314patch
• github.comhttps://github.com/r1ck9-2q/cve_summit/blob/main/Null-pointer-offset-undefined-behavior-in-JBIG2Stream-rewind-JBIG2Stream.cc-1229.mdexploit
• gitlab.freedesktop.orghttps://gitlab.freedesktop.org/poppler/poppler/-/commit/5e49250f13b0390edeb3f90eb4c02c9941f97067broken-linkpatch