Skip to main content

Wireshark CVE-2026-76880

| EUVDEUVD-2026-63176 HIGH
Out-of-bounds Write (CWE-787)
2026-08-19 GitLab GHSA-fh6r-4w3g-qgmx
Memory Corruption Buffer Overflow Denial Of Service Wireshark Red Hat Suse
7.5
CVSS 3.1 · Vendor: GitLab
Share

Severity by source

Vendor (GitLab) PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vuln.today AI
7.5 HIGH

Malformed RRC packet delivered over the network triggers crash with no authentication or user interaction; only availability is impacted.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
5.9 MEDIUM
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Red Hat
5.5 MEDIUM
qualitative

Primary rating from Vendor (GitLab).

CVSS VectorVendor: GitLab

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Patch available
Aug 20, 2026 - 01:01 EUVD
Analysis Generated
Aug 19, 2026 - 23:22 vuln.today
CVE Published
Aug 19, 2026 - 22:44 cve.org
HIGH 7.5

DescriptionCVE.org

RRC protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

AnalysisAI

Wireshark's RRC protocol dissector crashes due to an out-of-bounds write (CWE-787) in versions 4.6.0-4.6.7 and 4.4.0-4.4.18, enabling denial of service against any instance actively capturing or replaying Radio Resource Control (LTE/5G) traffic. The CVSS:3.1 AV:N/AC:L/PR:N/UI:N vector confirms an unauthenticated network-adjacent attacker can trigger the crash by injecting a malformed RRC packet into a monitored segment. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts
Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Position on monitored network segment
Delivery
Craft malformed RRC protocol packet
Exploit
Inject packet into captured traffic stream
Execution
RRC dissector triggers out-of-bounds write
Persist
Wireshark process crashes
Impact
Active capture session terminated
Sign in to reveal

Vulnerability AssessmentAI

Exploitation Wireshark must be actively capturing live traffic from an interface where the attacker can inject packets, or must be processing a pcap file containing attacker-controlled RRC traffic - the RRC dissector is only invoked when RRC protocol messages are present. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 7.5 High score is justified for availability impact: the vector AV:N/AC:L/PR:N/UI:N means any attacker who can place a crafted packet on a network segment being captured requires no credentials and faces no complexity barrier. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker with the ability to transmit packets onto a network segment being monitored by a vulnerable Wireshark instance sends a specially crafted RRC protocol message. As Wireshark's RRC dissector attempts to parse the malformed message, it performs an out-of-bounds write that corrupts memory and crashes the Wireshark process. …
Remediation Upgrade Wireshark to a version beyond the affected ranges as specified in vendor advisory wnpa-sec-2026-88 at https://www.wireshark.org/security/wnpa-sec-2026-88.html - the exact patched release versions are not confirmed in the available data and must be verified there directly. … Detailed patch versions, workarounds, and compensating controls in full report.
Sign in to read full assessment

Recommended ActionAI

Within 24 hours, identify all Wireshark installations running versions 4.4.0-4.4.18 or 4.6.0-4.6.7 and determine which are analyzing RRC traffic; prioritize systems supporting production networks or security monitoring. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

More in Wireshark

View all
CVE-2014-2299 CRITICAL POC
9.3 Mar 11

Buffer overflow in the mpeg_read function in wiretap/mpeg.c in the MPEG parser in Wireshark 1.8.x before 1.8.13 and 1.10
CVE-2013-4074 MEDIUM POC
5.0 Jun 09

The dissect_capwap_data function in epan/dissectors/packet-capwap.c in the CAPWAP dissector in Wireshark 1.6.x before 1.
CVE-2018-6836 CRITICAL POC
9.8 Feb 08

The netmonrec_comment_destroy function in wiretap/netmon.c in Wireshark through 2.4.4 performs a free operation on an un
CVE-2014-4174 CRITICAL POC
9.3 Jun 18

wiretap/libpcap.c in the libpcap file parser in Wireshark 1.10.x before 1.10.4 allows remote attackers to execute arbitr
CVE-2017-9353 HIGH POC
7.5 Jun 02

In Wireshark 2.2.0 to 2.2.6, the IPv6 dissector could crash. Rated high severity (CVSS 7.5), this vulnerability is remot
CVE-2017-17085 HIGH POC
7.5 Dec 01

In Wireshark 2.4.0 to 2.4.2 and 2.2.0 to 2.2.10, the CIP Safety dissector could crash. Rated high severity (CVSS 7.5), t
CVE-2017-9347 HIGH POC
7.5 Jun 02

In Wireshark 2.2.0 to 2.2.6, the ROS dissector could crash with a NULL pointer dereference. Rated high severity (CVSS 7.
CVE-2025-5601 HIGH POC
7.8 Jun 04

A denial of service vulnerability in Column handling crashes in Wireshark 4.4.0 to 4.4.6 and 4.2.0 to 4.2.12 (CVSS 7.8)

CVE-2023-4513 HIGH POC
7.5 Aug 24

BT SDP dissector memory leak in Wireshark 4.0.0 to 4.0.7 and 3.6.0 to 3.6.15 allows denial of service via packet injecti
CVE-2023-4512 HIGH POC
7.5 Aug 24

CBOR dissector crash in Wireshark 4.0.0 to 4.0.6 allows denial of service via packet injection or crafted capture file.

CVE-2023-2879 HIGH POC
7.5 May 26

GDSDB infinite loop in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via packet injection or cra
CVE-2023-1992 HIGH POC
7.5 Apr 12

RPCoRDMA dissector crash in Wireshark 4.0.0 to 4.0.4 and 3.6.0 to 3.6.12 allows denial of service via packet injection o

Same weakness CWE-787 – Out-of-bounds Write

View all
CVE-2015-3113 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2012-1889 HIGH POC
8.8
CVE-2010-3333 HIGH POC
7.8
CVE-2014-1761 HIGH POC
7.8
CVE-2009-3129 HIGH POC
7.8
CVE-2021-1732 HIGH POC
7.8
CVE-2013-3346 CRITICAL POC
9.8

Same technique Memory Corruption

View all
CVE-2015-5119 CRITICAL POC
9.8
CVE-2015-3113 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2011-0611 HIGH POC
8.8
CVE-2014-0322 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2012-4792 HIGH POC
8.8
CVE-2010-3333 HIGH POC
7.8

Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 12 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Affected

Share

CVE-2026-76880 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy