Is CVE-2026-53002 actively exploited?

No active exploitation of CVE-2026-53002 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-53002 be exploited remotely?

Yes. CVE-2026-53002 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-53002?

CVE-2026-53002 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2026-53002

Published: June 24, 2026· Updated: Jun 30, 2026

9.8

CVSS v3.1

EPSS:0.18%probability of exploitation in 30 daysPercentile:7.4th

Official Description

In the Linux kernel, the following vulnerability has been resolved:

netfilter: conntrack: remove sprintf usage

Replace it with scnprintf, the buffer sizes are expected to be large enough

to hold the result, no need for snprintf+overflow check.

Increase buffer size in mangle_content_len() while at it.

BUG: KASAN: stack-out-of-bounds in vsnprintf+0xea5/0x1270

Write of size 1 at addr [..]

vsnprintf+0xea5/0x1270

sprintf+0xb1/0xe0

mangle_content_len+0x1ac/0x280

nf_nat_sdp_session+0x1cc/0x240

process_sdp+0x8f8/0xb80

process_invite_request+0x108/0x2b0

process_sip_msg+0x5da/0xf50

sip_help_tcp+0x45e/0x780

nf_confirm+0x34d/0x990

[..]

NVD Source

Technical Analysis

CVE-2026-53002 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.