Event Monitor Cyber
EM-20261107-9A19 VulnerabilityCritical severity

Critical RRD::CGI::Image Vulnerability (CVE-2026-123776)

CVE-2026-123776

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Status
Developing

Since : signals keep joining.

First Signal
Nov 07 12:17 UTCC6 NVD CVE API 2.0
Page Born
Nov 07 12:31 UTCsecond source joined
Last Signal
Nov 07 12:31 UTC4 days before snapshot
Sources
20 official · 2 research, news or crowd
Open For
3 daysso far

Life Of This Page

  1. 1
    Born
    A second, independent source names it.
  2. 2
    Developing · Now
    New signals join; severity can move.
  3. 3
    Confirmed
    Not yet
    CISA KEV lists it, or exploitation in the wild is reported.
  4. 4
    Resolved
    Not yet
    Past the fix deadline and 14 days with no new signal.
  5. 5
    Archived
    Not yet
    30 days after resolved. Read only; the link keeps working. Reopens if it comes back.

The ID never changes, and earlier addresses keep working. A correction is logged, never overwritten. If two pages turn out to be one incident, the later one points to the earlier.

Vulnerability Lifecycle

  1. Disclosed: reached
    Nov 07 12:17 UTC
    C6 NVD published
  2. Scored: reached
    Nov 07 12:17 UTC
    CVSS 9.8 · EPSS 0.2%
  3. Exploited: not yet
    Not yet
    No exploitation reported
  4. Advisories: not yet
    Not yet
    None yet
  5. Vendor Response: not yet
    Not yet
    None in sources yet
  6. Resolved: not yet
    Not yet
    After 14 quiet days

Timeline

12:0018:00Nov 8BornC6 NVD CVE API 2.0C29 CIRCL Vulnerability-Lookup

Point at a mark to read it. Squares are signals, colored by severity; every one is also listed under Signals.

Signals

  1. GHSA-vx75-vp6j-73h2 / CVE-2026-123776 (opens source in a new tab) RRD::CGI::Image versions through 0.01 for Perl pass CGI query parameters containting "tz" to tzset(), , so a FIFO or device path blocks the CGI process. The normalize_params method sends any query key matching /tz/i… Med severityDatabaseC29 CIRCL Vulnerability-Lookup
  2. CVE-2026-123776 (CVSS 9.8) (opens source in a new tab) RRD::CGI::Image versions through 0.01 for Perl pass CGI query parameters containting "tz" to tzset(), , so a FIFO or device path blocks the CGI process. The normalize_params method sends any query key matching /tz/i… Crit severityDatabaseC6 NVD CVE API 2.0