Trending
CVE-2026-22184

CVE detail

CVE-2026-22184

zlib versions up to and including 1.3.1.2 include a global buffer overflow in the untgz utility located under contrib/untgz. The vulnerability is limited to the standalone demonstration utility and does not affect the core zlib compression library. The flaw occurs when a user executes the untgz command with an excessively long archive name supplied via the command line, leading to an out-of-bounds write in a fixed-size global buffer.

CVSS 4.6 · MediumBuzz score 44.0

Buzz score

Why this CVE is surfacing

Buzz score total 44.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 24.0 · diversity 20.0 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

24.0

10 evidence mentions in the snapshot

Diversity score

20.0

9 sources across 4 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 1; within the 30d window
Peak daily: 1; highest bucket

Evidence

Source links by recency

Newest mentions first

10 source links · newest first

Siemens CADRACISA Alerts
cations, Energy Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Vulnerabilities Expand All + CVE-2005-2096 zlib 1.2 and later versions allows remote attackers to cause a denial of service (crash) via a crafted compressed stream with an incomplete code description of a length greater than 1, which leads to a buffer overflow,
governmentwww.cisa.govJul 21, 2026, 12:00 PM
https://cert-portal.siemens.com/productcert/html/ssa-470355.htmlcert-portal.siemens.com
No excerpt available.
Vendor Advisorycert-portal.siemens.comJan 7, 2026, 9:16 PM
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22184.jsonsecurity.access.redhat.com
No excerpt available.
Vendor Advisorysecurity.access.redhat.comJan 7, 2026, 9:16 PM
https://bugzilla.redhat.com/show_bug.cgi?id=2427688bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comJan 7, 2026, 9:16 PM
https://access.redhat.com/security/cve/CVE-2026-22184access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 7, 2026, 9:16 PM
https://github.com/madler/zlib/issues/1142github.com
No excerpt available.
Exploitgithub.comJan 7, 2026, 9:16 PM
https://zlib.net/zlib.net
No excerpt available.
Productzlib.netJan 7, 2026, 9:16 PM
https://www.vulncheck.com/advisories/zlib-untgz-global-buffer-overflow-in-tgzfnamewww.vulncheck.com
No excerpt available.
Exploitwww.vulncheck.comJan 7, 2026, 9:16 PM
https://seclists.org/fulldisclosure/2026/Jan/3seclists.org
No excerpt available.
Exploitseclists.orgJan 7, 2026, 9:16 PM
https://github.com/madler/zlibgithub.com
No excerpt available.
Exploitgithub.comJan 7, 2026, 9:16 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence

CVE-2022-37434
zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetH…
CVSS 9.8 · Critical
Public PoC observed33 mentions
CVE-2026-59250
Classic buffer overflow in the Erlang/OTP megaco flex scanner C driver allows a remote unauthenticated attacker to corrupt the driver's memory (and potentially achieve remote code…
CVSS 8.3 · High
5 mentions
CVE-2026-44436
Quicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server. Prior to commit 8b178e6, Quicly is vulnerable to a Denial of Service attack t…
CVSS 7.5 · High
2 mentions
CVE-2026-6681
The PKCS#7 decode path ignores the caller-supplied output buffer size (outputSz), allowing decoded content to be written past the bounds of the provided buffer. This affects wolfS…
CVSS 1.0 · Low
2 mentions
CVE-2026-53203
In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Add buffer overflow check in MS get_info_ioctl Add validation that the info size returned from th…
CVSS 7.1 · High
7 mentions
CVE-2026-0164
In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution with no additional execution privileges needed. User inte…
CVSS 8.8 · High
1 mention

External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-22184.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

Sign-in required. Shodan requires you to sign in to run these filter searches.

Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:a:zlib:zlibSearch this product on Shodan

Exact CVE query

Eligible paid Shodan plan required

Shodan's exact vuln: filter is separate from the product searches above and requires an eligible paid Shodan plan.

vuln:CVE-2026-22184Search this CVE on Shodan

These are outbound search links only. cvebuzz makes no Shodan API call, uses no Shodan API key, and does not display live result counts.

Metadata

Canonical fields

NVD status

Modified

Published

Jan 7, 2026

Modified

Jul 15, 2026

Official record

Authoritative NVD record

CVSS vector

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

CWE IDs

Vendor classifications

How this vector reads

CVSS 4.0 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Local. The attacker needs local access to the vulnerable system.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Attack Requirements (AT): None. No prerequisite deployment or execution condition is required.
Privileges Required (PR): None. The attacker needs no privileges on the vulnerable system.
User Interaction (UI): Active. A targeted user must perform a specific action for exploitation to succeed.
Vulnerable System Confidentiality (VC): Low. There is a limited impact to this security property.
Vulnerable System Integrity (VI): None. There is no direct impact to this security property.
Vulnerable System Availability (VA): Low. There is a limited impact to this security property.
Subsequent System Confidentiality (SC): None. There is no direct impact to this security property.
Subsequent System Integrity (SI): None. There is no direct impact to this security property.
Subsequent System Availability (SA): None. There is no direct impact to this security property.

Optional CVSS v4 metrics remain in the raw vector; only base metrics are expanded here.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses