How severe is CVE-2022-4843?

CVE-2022-4843 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-4843 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-4843?

CVE-2022-4843 affects Radare Radare2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-4843?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-4843 published?

CVE-2022-4843 was published on 2022-12-29 and last updated on 2026-06-17.

CVE-2022-4843

CVE-2022-4843 is a high-severity vulnerability in Radare Radare2 with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Radare Radare2
Published: 2022-12-29
Last modified: 2026-06-17

Description

NULL Pointer Dereference in GitHub repository radareorg/radare2 prior to 5.8.2.

Frequently asked questions

What is CVE-2022-4843?: NULL Pointer Dereference in GitHub repository radareorg/radare2 prior to 5.8.2.
How severe is CVE-2022-4843?: CVE-2022-4843 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-4843 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-4843?: CVE-2022-4843 affects Radare Radare2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-4843?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-4843 published?: CVE-2022-4843 was published on 2022-12-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:radare:radare2:*:*:*:*:*:*:*:*

More vulnerabilities in Radare Radare2

CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…
CVE-2021-32494 — Critical (CVSS 10.0): Radare2 has a division by zero vulnerability in Mach-O parser's rebase_buffer function. This allow attackers to create…
CVE-2025-1864 — Critical (CVSS 9.8): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in radareorg radare2 allows…
CVE-2025-1744 — Critical (CVSS 9.8): Out-of-bounds Write vulnerability in radareorg radare2 allows heap-based buffer over-read or buffer overflow.This…
CVE-2024-29646 — Critical (CVSS 9.8): Buffer Overflow vulnerability in radarorg radare2 v.5.8.8 allows an attacker to execute arbitrary code via the name,…
CVE-2023-46570 — Critical (CVSS 9.8): An out-of-bounds read in radare2 v.5.8.9 and before exists in the print_insn32 function of…

All CVEs affecting Radare Radare2 →

Other CWE-476 (NULL Pointer Dereference) vulnerabilities

CVE-2022-36648 — Critical (CVSS 10.0): The hardware emulation in the of_dpa_cmd_add_l2_flood of rocker device model in QEMU, as used in 7.0.0 and earlier,…
CVE-2020-14500 — Critical (CVSS 10.0): Secomea GateManager all versions prior to 9.2c, An attacker can send a negative value and overwrite arbitrary data.
CVE-2010-2495 — Critical (CVSS 10.0): The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does…
CVE-2026-46195 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building…
CVE-2026-31657 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: batman-adv: hold claim backbone gateways by…
CVE-2026-31436 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor…

Browse all CWE-476 (NULL Pointer Dereference) vulnerabilities →